Mine are 8 and 5, my 5 year old obviously isn't taking a tablet on playdates, she occasionally plays a tablet game or watches a cartoon but she's not fussed for screentime, even on long car journeys she'll say she doesn't need to bring anything as she likes the scenery. She often brings a doll and chats to it about the scenery as if she's it's mum.
My eldest also doesn't bring a tablet BUT he does have a Nintendo switch and he and his friends will sometimes bring theirs toe ach others houses for playdates. They'll usually play 2 player games and they chat and interact constantly while playing the games but sometimes they'll be stuck on something tricky on a platform game and spend ages helping each other work things out. They only play age appropriate games and nothing violent and definitely not Roblox.
If we have a playdate involving tech it's usually a child who is here for around 24 hours, so a full sleepover and in that time they'll also play in the garden, build lego, set up hot wheels, we'll usually have an outing to a trampoline park or play park and often be out most of the day. Techs just a small part of it.
He does have tech in the car, he's always struggled with car journeys and is asd so when he struggles historically he could freak right out and end up making himself vomit. He mostly chats to his sister, chats to us, plays with fidgets, also brings a book but having something to lose himself in by way of a game really helps him.
People seem to imagine tech as some entity separate to other everyday life events and entertainment whereas it's just a small part of the day here.