Oh, but it wasn't hell of a lot worse. It was a little worse, sure - but as you mentioned, their incomplete update that time did get fixed fast, however, it doesn't change the fact that Summertime Saga were going on a similar pace for years now. The pace is quite good - as I said, I have no complaints about it - however it was the same 2 years ago, a year ago and it's same now.
There hasn't been a "return to usual schedule of quality updates" - the schedule hadn't changed for a long time.
As for changing your opinion - yes, you can change your mind, actually, you should be able to change it, if the situation like this changes for the better or worse. However, as I mentioned above - the situation on which you based your opinions didn't change, only your opinion did.
And you answered it yourself why did it happened. As you said - humans shaped by the things they see, hear, touch, taste and do. There is one other thing humans, also, apparently, not all of them, are capable of - it's called cognition. It allows humans to acquire knowledge, understand that knowledge and use that knowledge to get more knowledge. Here, I'll give you an example of what I can do with it:
Summertime Saga, an amazing and complex game, is using Ren'Ry which makes development easier when comparing it to, say, Unity - which makes coding a living nightmare, where everything that can go wrong will go wrong and everything that shouldn't go wrong will also go wrong. Development time on this engine will be slow as fuck even if everything will go correctly - and it won't, it never is.
GSG makes only 15k - some people think that's a giant amount of money, but it really isn't - I mean, I'm not even an American or European, I'm basically living in the third world country and I'm not making even close to that number - but I can understand, that such amount of money is not enough to hire dozens required testers to battle Unity and make development time faster.
If I'll check their change-logs and compare the amount of work and time passed between updates I'll notice, that GSG didn't suddenly switched to "MILKING PATRONS MODE" - they are working on a similar pace as before and the pace is quite good - it's not ideal, but nothing in coding ever will be - I don't know about the problems they are facing, I know about how godawful Unity is and using that knowledge I'm satisfied with the current state of the project - I won't mind if it'll be better, so I always encouraging people to critique this and every other project, if they actually have something sensible to say - which is not always the issue.
And here is what I can do without it:
Where is the update? Is update out yet? Is it out yet? Is is out? Is it? Is it? Is it?
WHERE IS THE UPDATE?! WHERE IS IT?! WHERE ARE YOU HIDING IT?! WHEN IT WILL BE OUT?! I WANT IT OUT NAOW!!
THERE IS NO UPDATE!! THERE IS NO UPDATE!! ARGHH!! HOW IS THIS POSSIBLE!!
I KNEW IT ALL ALONG!! GSG MILKING PATRONS!! IT'S A CONSPIRACY!! DO YOU SEE THE SIGNS!! IF YOU GIVE THEM MONEY YOU SUCK!! WHERE IS THE UPDATE?!
AND YOU SUCK TOO GSG, FUHCK YOU!! I WANT MY MONEY BACK!! I DIDN'T PAY ANYTHING BUT I STILL WANT IT BACK!! WHERE IS THE UPDATE?!
WHERE IS TH oh, update is out.
Well, it's shit, I expected more, bleh, the game sucks.
Where is the update? Is update out yet?
Well, it's just one example - the number of forms the idiocy can take is infinite.
I know how hard the shit the developers are going through - and I know that in order to get better you have to read criticism - and when you are going trough the piles of shit in order to dig up necessary coal it's really annoying and bothersome, even if some people don't understand it.
If you have something important to critique - please, do, you don't even need to sugarcoat it, nobody here is a snowflake, it's NSFW games forum - but make sure that what you are saying is actually relevant and not just and another form of "you succ, git gud".