What gets me I think is the sheer laziness of it though. Come up with some unique designs, rather than painting the leftover outfits you pulled out of storage.
TROS took the sequel aesthetic of just revamping classic OT designs and turned it up to eleven.
Honestly, if they had used classic Stormtrooper designs, but painted red, at least that would have been a fun little callback (and would have made more sense with the Palpatine angle). But they couldn’t even be bothered to remake the old designs! They just reused some old First Order armor, so they’re ripping off of their own movie.
EDIT: Sade, personally, I think your fix there looks so much better. Nice!