Many “government” entities in the US are private for-profit companies: Postal Service, vehicle licensing, electric companies, water companies, which control the very infrastructure of everyday life.

Capitalism.

The strategy is to get you onto a different platform to make instant messaging easier. They are just “advertising” on Lemmy.

Once you’re on a chat platform, they will likely attempt the Pig Butchering scam: make the target fall in love, then persuade them to send money for things like “travel expenses” or “family medical bills”. Also involves buying crypto.

https://en.m.wikipedia.org/wiki/Pig_butchering_scam