"fully / 100%" remote/distributed is important because it is difficult to be the only remote employee when everyone else is on site. Having remote employees brings a lot of benefits, but it comes with some expenses. Having the tooling/practices for meetings, discussion, whiteboarding, communication, etc. If you're only one of the 5% of the team remote, be ready to be forgotten often for important convos.

Remote working is a good thing for many reasons. No time spent commuting. Possibility to live anywhere you fancy. And for companies, it gives them access to an enormous pool of candidates.