Nothing, but it won't work forever as more and more sites start to use it, eventually (if they keep blocking it for years) their users will keep complaining and/or just leave if they cannot access the sites they want.

I have the feeling that limiting yourself to Gemini would guarantee you basically only ever communicate with the weirdest of the weird.

It has been ruled by SCOTUS that the Constitution specifically does not apply at border entry to non-citizens:

https://en.wikipedia.org/wiki/United_States_ex_rel._Knauff_v._Shaughnessy

the Constitution does not grant aliens any protections when trying to enter the United States.

https://constitution.congress.gov/browse/essay/artI-S8-C18-8-7-3/ALDE_00001263/['article',%20'14']

an alien "on the threshold of initial entry stands on a different footing" because he or she is theoretically outside the United States and typically beyond the veil of constitutional protection.

https://supreme.justia.com/cases/federal/us/345/206/

Although a lawfully resident alien may not captiously be deprived of his constitutional rights [to due process], the alien in this case is an entrant alien or "assimilated to that status" for constitutional purposes.

The Attorney General therefore may exclude this alien without a hearing, as authorized by the emergency regulations promulgated pursuant to the Passport Act, and need not disclose the evidence upon which that determination rests.

I think you answered your own question :)

How have I never heard about this one?

If you care about security, don’t put a Sim card in your phone.

Depends on what you mean by security... or privacy. You need to define a threat model before any suggestions can be made.

If you're worried about someone hacking into your phone via an app, a sim card likely won't make a difference.

If you're worried about your location being tracked... that can often be done without a sim card or any cellular service on your device.

Then there are malicious carriers (or ones compelled by a government) that could track you without even having legitimate service activated. All phones at least in the US now are mandated to have (A)GPS receivers.

All depends on what your concerns are.

default what?

could be motherboard-depend also

also a gdpr nightmare

system files getting corrupted under linux is way harder to fix than on windows... most distros do not even have a tool to check for integrity/existance of all the necessary base system package files.

It’s really not a big deal

For most casual users, it is a deal-breaker. And it's hard to get everyday people to use your software with roadblocks like that.

every time I open my email client.

You must not get email very often, this is absolutely a non-starter for me.

It's not enforceable in any way, it's just virtue signaling. Lemmy itself is a privacy dumpsterfire. GDPR compliance is literally impossible.