The first thing to know about genuine friendships is that they usually don't form when forced. Sticking 6 devs from different cultures, generations and seniorities in a room and saying "ok be friends now" is wishful thinking, the kind of simplistic shit you usually get out of management. To think that RTO is a solution to this is naive, sorry to be blunt. It has far more to do with who you hire. Lazy/incompetent management would prefer the easier RTO mandate, as usual.