The fact this came from hexbear.net immediately raises some mental alarms in my head. So, before forming an opinion on this matter...I read the GNOME blog post and processed the presented information before deciding: hexshitpost or no. I found the blog post to ultimately be built on a strong foundation of knowledge/sources; written in a neutral and non-combative tone that calls out System76 without being incendiary or unnecessarily cruel. The case being lain out about System76's many incidents of spreading harmful misinformation about GNOME makes me understand why GNOME does have some haters these days in the Linux space...
It's curious that instead of polishing COSMIC before pushing it out in the world, they released a broken version of what should've been something cool! I agree, perhaps working with GNOME and KDE would've been better if System76 wasn't going to meaningfully invest in COSMIC's stability before release. I'm sure they'll fix it in post launch updates. From my brief experience with COSMIC, it did have the bones for a good DE, however, the polish was lacking. It made me sad and switch to Bazzite.