That is true. Since active Commands compete for X/day uses, it would make a lot of sense to grab all the passive Commands you can and then one good active one. You could make a pretty good tank by focusing on AC and grabbing Parry, for example. Or at least a very survivable buff bot.
It's an issue with any form of buff power, really. It's why Bo9S maneuvers used Stances for most passive bonuses, and why so many 5e spells use Concentration.
I'm not saying it's inherently unworkable, but something to be aware of.