Age verification becomes more common. Australia, France, etc. introduce such laws to ban children below 15 years from social media platforms, to protect them.

Will these laws also be relevant to fediverse/lemmy specifically?

Personally I think these laws will focus on the big platforms at first (facebook/meta, youtube, discord, instagramm), which will force younger users with technical skills onto smaller and niche sites. Over time focus on this question will increase for the fediverse.