You think it’s a coincidence these laws are being proposed all over the world all at once?
Nope.
Giant companies run by surveillance capitalists are spending billions of dollars on lobbying governments all over the world.
The reasons for this lobbying are nefarious.
The bans will entrench existing companies ensuring no small company is able to compete. These massive entrenched companies will be able to afford the identity checking and compliance costs, tiny start ups not so much.
You can see why Facebook lobby so hard in favour of these laws. If their app WhatsApp is defined as the only group messenger allowed for kids by law, that is very nice for them.
Perhaps compliance is actually cheap and easy and small companies can afford it?
Certainly not if they are trying to compete in terms of privacy. They have to turn over their user ID data to a monopolist vetting company by law.
At best: we give the government the power to impose massive costs on any company they decided to add to a list of companies that count as social media. Impose costs and force them to hand over their user data to Palantir and the like.
Even if you trust the current lot of idiots in power to not abuse this whole-internet global tracking data, that is quite a totalitarian system to hand over to the really bad guys when they get elected next time.