Making it a hassle to circumvent the roadblocks can help make the undesired behavior less attractive to you in the moment or stop unconscious behavior.

For example, I sometimes open lemmy just with my muscle memory when I'm bored without even thinking about it, even though I know I've scrolled through pretty much all the current content I get in my feed already.

Moving the app icon around stops me from opening lemmy without actively thinking about it and therefore adds a (admittedly small) barrier to my bad behavior.

Adding a long and complex password that I would have to enter manually, as someone in the comments recommend, would probably make me rethink my actions even more. Do I really want to get out the password and be annoyed by having to type it out just to do this?