The variable is the personal bias response to such low framerates
Personally i'm not that fussed about it, for me it is playable, but others are more sensitive to the fact that they are getting only 30fps on rigs better than recommended specs
I was excited to have a GPU that can run Horizons at 5k (5120*2880) ultra on my 1440p 144Hz display cause four times the number of pixels as native is just enough to make the aliasing mostly go away. Then Odyssey comes along and I'm busted back down to native res, for worse performance!
Playable, sure. Acceptable? Not even close.