You dont have this situation when the issue is whether you have the ability to use a provider's images for non-permitted purposes. Your right to use someone's images how you like is not nearly as important as your right to a jury trial. I'm not aware of any case where non-arbitration provisions of a TOS were not applied due to browsewrap reasons, if you are aware of any I'd love to see them.
EFF's argument would be totally valid if Zillow was trying to force McMansion into arbitration. That's not the issue here, and it's misleading to start off with "your TOS are unenforceable [because courts have declined to apply arbitration provisions in certain browsewrap TOS contexts]"