How is this deceptive or harmful?

Are you asking how propping up deceptive and harmful people is deceptive and harmful? The question doesn't seem to make much sense.

From my understanding it’s stop people following others around and harassing them.

So are you asking how propping up deceptive and harmful people is deceptive and harmful, or are you saying you don't understand how the goal here is to prop up deceptive and harmful people?

Since muted people can follow you around and comment on your shit but now you can’t see them.

Correct, that's how muting works.

Why would you just not block them back so you’re essentially invisible to each other?

I did, but now why would I keep looking at other people's posts here at all? You think I want to keep finding people to block? How would that benefit me or be a use of my time?

Instead of getting mad you can’t engage some that specifically pressed the “don’t let this user engage with me” button.

Why would you not get angry at censorship? And are you completely forgetting the part where the posts disappeared without letting me copy and paste, or ignoring it on purpose, or just doing a really bad job making me understand how your thought process addresses it?