I'm at a remote first company and it definitely feels more awkward between folks in the office than at my previous fully in the office company.
I still say hello etc to people have have colleagues I get along with but not as many people I'd consider actual friends as where I worked before.
Another key point for code documentation is that the closer it is to the code it's describing, the more likely it is to be read and maintained.
I agree with this point and it's one I've always had problems with as a lot of developers seem to dislike code comments. I agree that comments shouldn't become a crutch of bad code but good, well formatted documentation on a class or group of functions which explains their usage in relation to the product or feature they support are extremely useful and much more likely to be read by engineers than some documentation written on a notion page somewhere.
Yeah, usually at least one a day.