Yep, anytime anyone accesses anything on the internet, there are certain privacy concerns to be had. They are generally not an issue if you aren’t being reckless, but there is still always a risk.
If you are worried about anyone knowing your IP, the only way to avoid that is to not access the internet at all. The IP address is the address which is used to send you data, which is a necessity if you want to access anything. When you access a website for example, you are asking the web server to send you a webpage which you then see on your screen, otherwise you could not see it. In order for the server to send you that webpage, it needs your IP.
It’s as if you asked “If I order a package online, do they know my address?”. Well yes, they have to know your address, otherwise they cannot send you the package.
Did you even bother to read the sidebar and rules before you joined lemmy.world?
Lemmy.world doesn’t allow for discrimination, racism, homophobia, transphobia, etc. It doesn’t even allow for name calling and requires posts with controversial topics to declare that it is a controversial topic… In other words, most lemmy servers, especially the lemmy server you have chosen to join, have much stricter moderation rules than reddit, twitter, etc…
If you don’t want “snowflake crap”, you should probably join another instance, or host your own server where you make the rules… And you are free to do so, but demanding that a server, which you don’t own and have no control over, panders to your specific wishes seems a bit entitled…
One could even say that your attitude seems a bit “snow-flaky”…