DPC has already earned more money than most people earn in a lifetime and could literally stop working right now and still get tons of money from Patreons over the next 2-3 years at least with some posts and previews once in a while.
Therefore his claim that he would continue development even if noone would support him or that people who do not share his vision should stop supporting him are just empty words. If he truly meant what he said, he would do something to show his appreciation of his supporters like pausing payments until release, lowering prices or giving some of the higher tier benefits to lower tier patreons.
As he isn't doing anything in that regard, it just shows that DPC is running his business as usual and isn't "developing the game for himself", but just using that excuse as so many creators do, same as the "you are not buying a product, you are supporting the development etc." stuff.
I do not like the fact that DPC does not hire any help with the amount of money he earns, but he is a control freak and has his vision so that is still kind of acceptable (except for those Jill previews and otherwise screwed up renders, like come on, get someone to do quality control on your renders and re-render them if they turn out bad)
His loyal supporters are defending him for many things, but when he is claiming that the animation render queue takes a few more weeks, when he could easily upgrade or scale out his system just from a small percentage of his monthly earnings, then you know that he is milking it for all its worth and I don't see any argument that would proof the contrary.
Sadly, money corrupts and you can clearly see it with DPC over the last few years. If you are rich you just want to get richer, so instead of buying some more hardware which he wouldn't even notice on his bank account he knows that he can just let things render for weeks and still get paid.
This game is one of the best and every release is awesome, but if DPC truly invested the money that people give him in "support of development" in any reasonable matter, you would see 2 updates with the size of EP9 per year with probably even better quality.