I’ve got one of those Artpresso tools. I got mine as it also has a built in screwdriver in the middle to release the LM shower screen.
It works well, but I’m not sure it does anything other brushes don’t do besides making it slightly easier to scrub.
I find backflushing alone isn’t enough to clear all the oils and crap from around the gasket so use this tool to quickly drop the shower screen and scrub around the edge of the group head.
Not sure if it’s the same but mine also has a mirror in the back to easily see the group without cranking your neck underneath it.