Not Sure if you have seen this or not, but XAR a South African business associate to Fantom is claiming all the IP rights to yearn saying the concept ideas were theirs.
Legal Documents can be found here:
From a technical point of view, how likely is it that they can shutdown yearn? The smart contracts are on Ethereum, so they can survive, but what about the front end?
Front end is open source. Its super easy to rebuild anyway if needed.
From tech perspective it boils down to buying new domain.
Closing this one cause excessive answer is provided by criptodee.