The glacial pace has never made sense, nor will it ever.
Dude's running barely edited Daz models in Renpy, that he already did all the model work for ages ago. Literally everything he does is model posing and typing up a few dozen lines of code in Python.
Do you not know how insultingly simple Renpy's Python code and Daz posing are? His updates are things that you can output in a couple of hours at most. Back when he was doing weekly updates, it was minutes of work, not even hours.
And that's ignoring that he gets paid almost 5 grand a month for it.
Don't make excuses for horrifically bad business practice and non-existent work ethic.
How much free time do you think a dad, with two toddlers and a full time job has? The answer is a few hours now and then on a weekend evening... sometimes. The dev pace makes perfect sense if the dev works on this hobby project a couple of hours per week, on his spare time, once the kids are asleep.
I know a bit about Python and I can make poses in daz so I do know about how much time goes into a render. I refuse to believe this is his full-time job, because the progress is too slow. Anyway, people keep tossing him money, I don't know why, and I would recommend them to stop but who am I to tell people what to spend their money on.
To me, Happy Summer is the very definition of Patreon milking and I'm genuinely curious why anyone at this stage would support this development.