Because you get only 60%-70% xp comparing to the invasion mode.
those game modes need an xp buff to attract players.
The similar behavior happens in play the losing side as well .
For an example, The Berlin campaign games are most like 7-10 soviet human players vs 2-3 German players + bot, making the game experience for german players are really bad, and they get xps much slower and cause less and less players choose the Germany side. If you may give an x1.5 xp buffer it will change something.
Also I will quit the games where my side lost a sctoras soon I just join the game because I’m 99% certain of losing such stupid game.
Tey fix your match making system before adding those “fancy” things.
I agree but it’s the only way to attract new players