It's very clear that DNS is fundamentally broken and any resolver that does not resolve because of political decisions should be considered not fit for purpose; it is advised not to use any resolver that is mentioned in this article as they have all been affected.

My understanding is DNS resolves a domain to an IP address. If there is any process that prohibits that, then it's not working by design.

Thankfully there are many resolvers that will always resolve no matter what 'legal' may throw at it. This is fundamental despite what content lies on the other side.

There will always be cat and mouse with speech and rights to access, and any protocols will be challenged. Thankfully, others will say 'no thank you' and refuse to listen to any order, legal or otherwise. And thankfully, they cannot be touched (VPNs, TOR et al).

Even the most censorship heavy countries in the world have to resort to physically shutting the internet down, because if there is a pathway, it will be found. It's just human nature.