Doesn't super-score ACT scores but requires you to send in all scores?

A school I am looking at UW Seattle has a policy that struck me as weird.

They don’t super score ACT scores but they “require” you to send in all scores.

I dont understand how this benefits the student. Can they actually check if you sent all of them in? Why are they doing this?

Can’t you destroy an ACT score from existence if you wanted kinda like with AP tests?

The reason I ask is I am taking the ACT in like two weeks. I have been taking studying a little lax because I want to try taking the test with a different mindset that knowing me might help me do better. However there is a chance that it could cause a significantly lower score as well. I already have a pretty decent score that will get me to most of the places I am looking at (29). I am realizing that this is perhaps a bad idea.

It is possible if you send a written request to ACT to delete your scores. But then if you wanted to use a super score policy at a different school you would be out of luck. College don’t know how many times you’ve taken the ACT since you have to pay to send each individual test date but it would be dishonest and unethical to only send one score if they require all of them.

The reason they do this, as I heard from an admissions officer today, is that while they don’t super score the ACT because it takes a certain algorithm rather than just addition, they do look at your highest score in each section if you have multiple tests.