Everyone else was doing that as it pertained to a STORYLINE. None were showcased as being there forever.
Also until the second Thor movie- if a movie or tv show by Marvel was coming out-they made sure who you saw MATCHED who was in the comics.
The majority of the replacements got new names and books to try out.
All this crying over there were lead by entitled fans who CLAIMED to know Marvel but never read the books and had issues with POC not being in the background.
Rhodey at most was Iron Man for 20 issues. Both times left a door open for TOny to come back and he did.
DC's issue is you saw the legacies way more than many of the originals.
See Jaime Reyes-most folks did not hear of Ted Kord.
If you were born after 1986-John Stewart was the GL not Hal.