Example: Their dad would take their video games as punishment for something totally unrelated and it bred resentment. I took their video games only if they were fighting about a specific video game and I only took that specific video game and lectured them that they were doing it wrong, games were for having fun and if they were fighting with a loved one over a stupid game, they were totally missing the point. They learned to negotiate and cooperate and not fight.
I also sometimes took their controllers during the day because we homeschooled and "10 minute" breaks would turn into hours of video games and they got nothing done. So, for a time, I locked up the controllers during the day. They were given them back not at any specific time (like 3pm) but once they were done with their school work for the day. So working harder got rewarded.
If there was a problem in specific, I addressed that specific problem. But I never arbitrarily limited anything like "screen time." I have zero understanding of what the point of that is. To my mind, unless you specifically think it harms them developmentally (for example, creating eyesight issues), I just cannot fathom why parents feel some need to be so controlling about this stuff. It just does not compute for me.
They are now 25 and 27 and they are wonderful human beings, imo. I am perfectly happy with the results of my parenting efforts.