I have a sneaking suspicion you don't have much experience with project management overall. Either way, this isn't typical behavior of a successful business, nor does it bode well for the longevity of their brand.
Let me put it this way: what these two are doing is resource loading. They're finding enough busy work to justify continuing to charge their customers - the Patrons who pay a monthly fee to access specific work product - and not face issues with Patreon (and legal battles in some countries) down the road. The primary issue is that they're terrible at doing resource loading correctly, and any legitimate business would avoid signing contracts with someone who routinely fails to furnish actual work product.
To put it bluntly... More than two years for a single minor update - regardless of personal circumstance - is unheard of in terms of a 2D AVN. It's especially egregious when compared to other developers who not only produce regular updates, but have also managed to figure out proper workflow and scheduling to ensure they hit their deadlines. Your continued defense of these two isn't going to change their behavior for the better, but instead solidify their belief that enough people will keep supporting them despite a dramatic decrease in work.
I've never said they are the best at managing themselves, but that their reasons have always matched their output before this update -and that this past record is consistent with the progress they claim to be doing, all 'excuses' considered. Once this update is released, we all will be able to evaluate this period much more fairly -even if biased, as I'm sure most of the regular complainers have already decided this update just doesn't worth the wait anymore even if devs eventually produce the best lewd game ever. I've also stated that their credibility will now be on the line and their credit will be pretty much exhausted if 0.8 turns out to be another long development period, as there are no foreseeable conditions that would explain more delays (Holly's quest is already started and announcing more external issues would only be detrimental to their credibility to the point of pushing away even their more devoted fans like me). And I've also said that is just human to slow things down a bit if you have a somewhat stable income sources with no other external pressure than periodic whinning from non-patreons: you are working on your personal project, enough people are paying you for it, and they are allowing you to create that project the way you want in terms of quality (you are not pressured by deadlines so you don't need to cut corners and can work on it until you are fully satisfied with the results). As long as you are transparent about that pace so people not agreeing with it can take their money and leave at any moment they wish, I don't see any problem with this. And, again, these devs are nothing but transparent - if someone just don't want to believe what they say it's not on devs.
Now, for convincing people with my posts, I can assure you that devs don't need me to do that, and I highly doubt they are even aware of my behavior here, as we never talk about that and they just don't visit the thread anymore. Actual patrons get their official info elsewhere and can communicate directly with devs through those official channels as well, so what I'm doing here is irrelevant for the game's current funding. Heck, I've even said to potential patrons out there that it wouldn't be smart to subscribe at this point, and always advise to stop supporting whoever dev as soon as you see something you don't like or agree with -you may not change that 'something' but at least they won't be doing it with your money. So I'm just offering my views and some official info here and there so that people can make their own judgement about these devs' work and honesty, because I actually believe them due to all their past work and behavior (and this is not a blind support, it's always subject to change as stated above).
If someone already thinks that these devs are scammers then it's obvious I won't change their opinion anyway but this won't stop me from insisting on what I find fair. What I wonder myself is why someone will prefer to align with some baseless assumptions form people with no insight over this project, and just disregard publicly available facts just because I'm the one stating them over and over again. For instance, here you replied to my comment debunking yet another baseless claim ('devs didn't work at all during the first six months'). You choose to basically 'advise me' against posting that kind of info (because it can encourage devs to keep doing their bad deeds) instead of telling the other guy to stop posting clearly false claims. But without that other guy's message and many others like that, mine wouldn't even exist.