Think about it like this:

When you use twitter, you're connecting to 1 gigantic closed relay. Twitter, being that big relay, knows your IP.

When you use nostr, you connect to many open relays. Those relays know your IP.

One isn't necessarily riskier than the other, depending on your faith in Twitter. But both have risks. (this is true of using any website that is linked to some form of identity)

PV, Peter!🤣

Yup VPN every time, I'm in Germany now maybe USA later