Part of the problem is that it's a feedback loop. People use social media and somebody makes some misogynistic content which angers people which then gets the algorithm to promote it heavily. Then somebody else who's inspired by that content makes their own misogynistic content and the cycle repeats. Once enough of that content is circulating it becomes the norm and a bunch of people start dogpiling on it to be part of the in crowd. It's particularly pernicious when it's being used to blame people's problems on others which is how the incel and red pill groups got their start.
It's not just the girls/women that need to get off these platforms, it's the boys/men as well. Algorithms that reward anger and controversy are a significant part of the problem and really should be looked at to be regulated the same way gambling and addictive drugs are.
Internet of Things is a terrible no good idea, but Intranet of Things has some potential. Entirely local mesh networks like Zigbee and Z-wave solve most of your problems, doubly so if you properly confine their controllers into their own non Internet routable subnets.
It's honestly my biggest complaint with the Matter standard, it has Internet bridging baked into the design while the prior standards made that completely optional.