I stopped putting my handle on public spaces because I got invited to spam chats and shady scam stuff.

*Being added to a group message on Whatsapp every other day.

(This message could not be decrypted)

I haven't federated my server. I would freak out.

Both

I get way more spam on WhatsApp than on Matrix. Never been invited to a fake group chat on Matrix at least...

This is why you should use Signal.

At least there is message requests so you report and block if needed