Upfront: I think you're right. Not arguing that point.
But to take it a step further...the question becomes why do they want to curtail player income?
I think we all can readily see that it's pretty easy to make money in BL, at least beyond the very earliest stage. But so what? I haven't felt that made it too easy to gear up self/companions or build up a powerful party. HIgh-end gear (especially body armor) is limited primarily by scarcity rather than price. It's pretty easy to find and buy "good" gear (if needed at all; much of it comes from loot/tourneys anyway), but rare to find "great" gear, whether affordable or not. Sure, I eventually get there, but it still takes time. Likewise, money-wise I can easily afford a full party of 100+ Banner Knights and/or Fian Champions supported with, say, Vland Sergeants and Imp Legionaries, but that likewise takes a long time to recruit/promote; recruitment costs & wages aren't the primary barrier here either. Finally, the biggest issues in standing up a viable fief don't have to do with money, but rather the time it takes to build up walls/improvements (even if cash-boosted) & militia, and coming up with enough troops to man a decent garrison without gutting own party.
So, okay, it's "too" easy to make money...but money isn't the limiting factor in most of the goals a player pursues anyway. Just feels like they're trying to fix a "problem" that isn't really much of a problem in the first place...at least in the current state of the game.