While complaining about complainers seems pretty counterproductive, it would be appreciated for the complaints to be more constructive. You're not exactly in a situation of venting out to the clouds; if you look through the thread, both Bo and Koda have posted here on multiple occasions. While it's pretty clear it won't have as big of a priority as the Discord server for people who are patrons, they definitely read this to some extent and would listen to proper feedback.
Back to the subject, I don't think delays are the issue. Hell, even the feature creep is understandable. This is a clear passion project, with what I believe to be no laziness or money involved. If it was all about money, it's very likely that Bo would've had no quarrel simply sticking with drawing niche commissions for low-attention kinks, as the amount of money they're able to toss at that can often be insane, and could make him more V-Bucks than the Patreon. They'll want to have as much detail in there as possible and that's completely fine. Again, where the key issue lies is in the lack of positive transparency and generally low frequency of Patreon updates. The reason for the former is that they want to keep as much as possible a secret, in order not to spoil anyone's experience. This form of silence was acceptable when the game was still small enough to get frequent updates within 30-45 days. However, due to the current scale of the project, like the aforementioned schedule, this isn't working anymore.
Yes, if someone goes onto your Discord server, they can see you being active, talk with you and try to get information that satisfies them. Still, bear in mind that while you have 1363 patrons, at the time of writing this, the server only has 245 people online, and only 2/3rd are actual active patrons. While the member count does not display offline members, I'm currently not willing to believe there would be more than twice as many offline (at most), which would still barely be around half of your current patrons. What about the other half? What about those on pages such as this one, observing your progress and possibly being on the verge of actually joining your Patreon themselves? What do they see when they check the posts? What do they see when they check the community section? They see one progress report and no update since January, followed by delay after delay. It's difficult to blame them for feeling like you're not doing enough of a job, with the average post being right on the negative end of the spectrum.
I understand you don't want to reveal content, but would it not be possible for you to do something extra on the side, to post on Patreon with, be it in the art or writing departments? You don't have to reveal the curtain altogether; let those interested collect bits and pieces, so that they can imagine the bigger picture. In terms of artwork, what do the floor's interiors look like? What sort of atmosphere do you want the player to feel in it? What will the villain's weapon look like? What will a key object of the floor be? If there is something belonging to her that will be paid particular lewd attention to, what will it be? What have you just finished?
In the writing department, who is the captured/corrupted character (based on the fact there's been one on every floor so far, I'm guessing there will be one here as well)? How did they become aware of the tower? How have they gotten this high onto it? How did they attempt to fight the villain, and how have they failed? How were they weakened/broken into who/what they currently are? What is their current relationship with the villain? Again, what sort of atmosphere would you like to establish with the floor? Writing would be an especially recommended form of teasers, as there are multiple ways you can do them (diary entries, a conversation with another villain [ex. an Eliza confessional], a straight-up story, etc.) and when long enough, it would be easier to split them up, releasing them per-part in a regular manner
Currently, I do believe that you should consider these kinds of "mini-teasers". From what I can see, it feels like they would kill three birds with one stone - those already in on you can still start piecing together their guess of what the boss will be like and, if they don't want to do so, they can still see a form of progress; those who are on the verge may be encouraged by the increase in activity, especially if they do not participate in the Discord server, and those complaining may be able to have their worries calmed down (with the exception of the more severe/vulgar complaints, for which it would likely not work either way). The choice is yours, though. If you've actually bothered reading through this, that's already something I'm glad of and I hope you'll be able to solve this issue.