Some TLDs do. Others don’t. Most commercial ones have very few restrictions. Country code TLDs like .ai or .io or .af may cause issues. I believe .cat is only meant for Catalan content, for instance.

I wouldn’t put any porn or feminist activism on the Tslibsn’s TLD (.af) and a whole bunch of other countries may not be compatible with other types of websites either.

It’s rare that anyone checks, but if you violate the rules and someone reports you, you may be in trouble. Most domain registrars also have rules about your registration contact (name, address, etc.) be accurate and inaccurate information may be enough reason to take your domain from you.

If you buy a domain, you’re presented with terms of service. Read them and you’ll know the rules that apply.