I wonder what would happen if you said "Ah, so you're stipulating that it's a contract of adhesion. I'd like that in writing, please."
Contracts of adhesion can be harder to enforce [0].
(IANAL, and I'm not necessarily recommending doing this, but I am curious what kind of response one would be likely to get.)
[0] https://en.wikipedia.org/wiki/Standard_form_contract#Contrac...