-limiting premium's auto-vacation so it can't be used in a ridiculously long stretch. Maybe something like 30 days.
And
-adding no-vacation single daily games, although seeing I'd imagine few people would actually use them, the pool would be pretty small and game matching would take maybe weeks and could pair up people with different ratings simply as there aren't enough people playing it.
Then people will start complaining they time out on these games when they physically can't get to a gadget to make the move.
- I'm busy for most of the time. Unless you like beach holidays (I don't) or resort holidays often one is doing something, e.g a city holiday
- pretty sure it also helps people on business trips.
-when I'm away often I don't want to play chess. I sometimes have a no gadget policy on myself during holidays.
-the big one-
Going to another country, or maybe to the countryside or simply doing a lot of travelling so you don't have wifi or 4g access.
As well,
-it also helps people in hospital, sports trips, etc.
-retreats to things like monasteries (not my cup of tea but for some members may be a thing) or to yoga retreats may force people to not have phones.
The only childish one here seems to be yourself, OP.