I will speak plainly.
You (liberals) don’t like the EO because it gives conservatives back a fair footing on college campuses. You are hiding your dislike of conservative free speech behind what “ifs”. The fear is liberals have gained so much traction and come so far and now are going to share the platform, give freedom of speech to those they have fought so hard to repress and vilify.
Liberals are going to see this as unfair and regressive to their agenda. That is what the opposition to this is all about in a nutshell.