I agree that most gamemodes do not play that way, and the classes are more restrictive to be a pure arena shooter.
But playing soldier or scout in gamemodes like Koth and PlayerDestruction scratch that itch enough for me to count.
Fast respawn and itemspawn management, combined with good map knowledge feels like good old quake 3 or UT sometimes.
Then you have dozens of rocketjumping maps in the server browser, which no game i know of has these days.
5,500 hours in Team Fortress 2 and over 6k in Guild wars 2. I do not regret any of it. Had lots of fun and even met my wife in gw2.
You only lose time when you do things you do not enjoy.
Realizing you are not really enjoying something is a whole other discussion ofc.