I'm going to get flamed:- my ds's both have iPhones, gaming pc's, Xbox ones, ps 3 (never used), nintendo switch, iPads and older gaming machines (saga mega drive, master system, Atari, game boys).
I have never 'regulated' screen time. Ds1 is 18 now, so just uses his gaming pc, but is more caught up in A-Levels (4 A-Levels and a B-Tec), work and his girlfriend.
Ds2 (14), plays rugby for school so two practices after school each week and a match. Plays football out of school- 1 practice and 1 match per week.
Has only done 2 pieces of homework at home since September. Him and all his friends use their lunch times and breaktimes to do their homework so they can game in the evenings (we have a school app that notifies us if a piece of homework hasn't been handed in- he's missed one this year).
On a weekend he will say 'can you take me and x to town tomorrow, we are meeting up with all the boys and going to the cinema/swimming/trampoline park etc'. So has plenty of 'socialisation' with all his school gaming friends outside of the bedroom/headset.
There is one boy though who is not allowed any form of gaming machines. We have had a few instances where his mum has messaged me and said 'does x want to come down' and ive had to say the boys have all gone out together as they'd arranged it last night/this morning on the Xbox. I do try to remain ds to contact this boy. But he has no social media or apps as he only had a basic phone, and all the dc contact each other via messenger, whatsapp etc. I do feel sorry for him, and ds has said that when the boys are all talking about games whether it's this, FIFA, etc, that he goes really quiet because he can't join in the conversation. He can't even look on YouTube to see what they are talking about!
There's being sensible, then theirs putting your child in a position where the world is evolving and you are not allowing them to be part of it. But that's just my opinion!