I think the whole point of the article is to agree with you - DeFi actors don't have a choice in the matter. They kind of just do what the network, their foundations, tells them because minority forks become non-functional and worthless.

Miners seem to be the real victims here. Even if they support a minority fork that could preserve their hardware investment, it doesn't matter because the fork will wither and die due to contract dependencies that don't survive the fork. I guess PoS supporters have little reason to care about miners though.