How many companies would you estimate have cultures with such problems? If they're quite numerous, then it seems to me that remote work removes a high risk of landing into an unsatisfying role while paying the price for having to still go to the office -- this lack of satisfaction is much easier to deal with at home where one doesn't have to pretend to be engaged so long as work gets done.
I agree with you in that at the company with the culture issue, working from home was ultimately the only way I could be productive and not hate my job. I did it for a while before ultimately leaving.
However it is definitely not a solution to an actual culture problem. Ideally, working from home should be a choice because it suits the individual’s needs, not a way to separate from dysfunction.
I think culture problems are quite common. Plenty of people report them, on the other hand I haven’t run into them all that often, and there are many people here who report reasonable cultures.