You can't do anything because these excuses are window dressing and not the core of the issue. The core of the issue is that 99% of people are incredibly unwilling to change their habits or spend five minutes to wrap their heads around how things work. If the question of which server to join is too much, this kind of space isn't for you.
No, having a full time job or a family is not an excuse to not learn how computers or the internet or networks in general work. You've had a lifetime to learn and are willfully ignorant. If you just give up and run away the moment you have to apply two braincells to understand a new concept, your cognition is fucked.
Im personally fine with basic competence and tech literacy to be a natural gate keeping the unwashed morons out. Lemmy is growing at a fine pace without catering to the lowest common denominators.