With that being said, the signals are still there - just a bit more nuanced. Gitlab has good terminology around this: https://about.gitlab.com/company/culture/all-remote/stages/
My signals:
* Do they talk about central office locations where certain people/groups of people work? Does being in that location give you advantage.
* Do they expect you to be in the same chair/desk/location everyday? I don't care to do #vanlife, but I want the flexibility to work from a hotel/other location from time to time.
* How does the team manage work hours? How much of the workday needs to be "the same". In my view, ideal teams have some core hours where it's easy to collaborate then leave it to individuals to round out a productive day elsewhere.