There was an almost exact example of this: City Skyline 2. It's (was) a poorly optimized game and they said Unity's DOTS didn't match their expectation, making Unity look bad, while some issues (like they didn't use LoD where they should have) weren't Unity's fault.
And even in this case, it'd be extremely weird if Unity published a blog post about how City Skyline's studio is a "Just a total shit show, from an employment perspective" (quoting Andrew word by word here).
This is actually is an interesting example, because Cities Skylines 2 has been handed over from Colossal Order to Iceflake Studios recently and since then they have (in my opinion) quickly been able to improve and fix a lot of things that CO weren't able pull off for years. So perhaps CO's development was somewhat of a "total shit show"?
I'm not saying Unity should publish PR about how Unity is working well and this handover and subsequent fixes proves it, but I think you could argue that they could and that they would have at least some facts to back it up with.