As applicable with all areas of life, association is a security risk. By depending upon any centralized authority (such as a server or domain name registrar) you are open to being censored (either by them or an attacker).
At this point however, decentralized web-hosting solutions still rely upon clearnet centralized port checkers, which is (ofcourse) an issue. The best the community can do is help to raise awareness of decentralized web hosting in the hopes more people will adopt it leading to a higher likelihood that the problems will be solved.