True, and I accept this is a potentially good legal refutation of this kind of argument. However, I do consider ToS-es untenable and unjust because of this power asymmetry.

If my computing node is interacting with your computing node, we should either both be able to put restrictions on the use of obtainable information or neither.

You an avoid them collecting your data by not visiting their site.

And they can avoid me storing their data by not offering it to me. Both are rather lazy arguments.

This is besides the fact that many sites (LinkedIn included) aren't very upfront about what exactly they collect. Also, after a certain point, it gets impractical to have to make this decision for each and every site you visit.