Reddit shows porn to kids too, as long as they tick the "Show mature (18+) content" box. Same with Telegram, Discord, WhatsApp, Facebook, and the rest.
The only apps that don't seem to turn a blind eye are Instagram, TikTok, YouTube and Snapchat. Epic Games and Roblox also do a great job, both have strong moderation teams and built-in tools to protect younger users. Every company should use them as examples. They've shown it's possible to build huge platforms without ignoring the safety of kids online.
Now that the UK forced these reckless billionaires to update their software to comply with the rules, every government should do the same.