AIB "the meanest mum of all" to not let DS have constant computer time when a friend comes over?

[AnotherEffingOrangeRevel]

I need a normality check. DS(9) has a friend over. After 1.5 hours on the play station I've told them to go and do something that isn't computer-based. DS is mortified and angry with me. Apparently they can do whatever they like all the time at his friends' houses, and this means continuous playstation. AIBU?

I don't think there's any connection Solobo. No phones at the table here.

My rule for playdates is that if everyone plays nicely when we get home, then they can play computer games after tea (normally no screens on school days). It works fine most of the time except for one playdate when the kid brought his iPad and DS with him. When I told them to go off and play for an hour until tea he looked perplexed and said, "Play with what?". (Our house is full of toys, lego, craft stuff etc)