Let's not jump to conclusions.
Also, (IANAL nor MD) i think at any workplace you can ask for a reasonable accommodation if you have that medical paperwork stating that open office causes anxiety to the level of disability. Even without paperwork i think you can just ask for it at many places. For example, we have a cluster of several cubicles on one end of our floor, and some of them are permanently assigned to some employees (I got offered one too because i was b!tching too much and loud about our open office - i declined in order to avoid getting too comfortable and losing that minimal drive that i still have to change the job :)
I went back to my contracting job in an industry that is truly diverse - not just a few token 28 year old women team leads or POC, but actual diversity: middle aged men and women with kids, older devs in their 60s nearing retirement, naturalized citizens from all over the world (instead of the few big countries supplying H1Bs).
It's a much better environment. I'm happy to cover for my 45 year old coworker when she picks up the kids, and she does the same when I need to 'clear my head' by working at Starbucks for the afternoon. We don't stay late and play XBox or have happy hours, and that is fine with me. We're a good team during the day, and content to socialize a few times a year at the holiday party or few other office events.
Its been very refreshing. There is no race to out-hour anyone, my coworkers all support one another vs trying to be competitive and back stabbing. I really thought I might have to consider another line of work at some point, but good places do exist.
Interestingly though, my one real complaint is the "open office." Its not entirely the company's fault, it used to be quite comfortable but they knew they would be growing and leased space in a building that is under construction. Shockingly (/s), its completion is very delayed and now we are starting to get crammed in.
www.reddit.com/r/cbd might be a good place for you to start...