There is one very recent exception however, the russian plans to partly separate from the internet shortly (especially regarding DNS) could well be an issue.
Registries range in resources from "highly experienced billion-dollar organizations", to literally "we have a guy who updates the zone file in notepad", and they range in legal environment from, "functional democratic state with well-established judiciary" to "our government was violently overthrown this week".
Whether or not the problem is negligible depends on your particular use-case. For some, it might be a good choice, for others, it might not be.
Consider AQ, TW, GG, SJ, EH, HK and many others.
AQ is controversial to countries who want to exploit Antarctica's natural resources.
TW is controversial to China.
GG is controversial where it's used for tax evasion etc.
EH to Morocco, HK to the UK/China.
Also there were some comments from the owner at the time that I thought were pretty unprofessional about it, too.
https://www.theregister.com/2010/05/12/germany_top_level_dom...