Having 8 3090's and not SLI-ing them for significant performance improvement is outright retarded.
Running 8 systems with one 3090 is a waste of time and resources, when you could SLI two 3090's into one system and increase performance but I'm not gonna go into details about that. Same reason he didn't want to upgrade to 4090, because you can't SLI them, but that insignificant because in tests the 4090 creamed SLI 3090 Ti's, barely but it did. So anyone that's saying upgrading to 4090 isn't improvement on his system doesn't know what he's talking about and he's not even worth replying to.
I don't know if you played TGO, but at 55% complete, the game has a playtime of ~30 hours. They drop an update every two weeks. Just for comparison since the beginning of BaDIK, NLT has completed 2 full games with like 60+ hours playtime each and is halfway through the third game, so your comparison isn't that good.
Besides I think DPC is talented, there's no doubt about it. But personally I think other devs are more motivated, talented and have a better sense of what they want to do with their games than him.
I don't know why you got your panties in a bunch, since we are free to criticize him as much as we want. If you want to see people only praise him, you can go on his Discord.