I completely disagree.
If you buff something enough, it warrants a price increase also. Case in point, the 222. It's far too cheap for the utility it provides.
Likewise, if you nerf something enough, then it also warrants a price decrease. It fails in cases like this because Relic follows logic such as yours, which upsets quite a few people and doesn't make any sense at all.
Your approach basically assumes that they make arbitrary nerfs or buffs in the first place as if they were in a vacuum. Everything has to be done relative to other units, you don't make something more powerful just for the sake of making it more powerful.
You could, however, argue that the changes to, for example, the 222, were too significant or not warranted at all, but you would need evidence for that, which I assume relic had in order to convince them the changes were needed in the first place. (I'm not saying that I always agree with relic or anything) I don't think anyone would argue that the 222 wasn't underperforming before the changes. Maybe they went a bit overboard and it could use some further adjustment, I'm not sure.
The entire idea of "balancing" is based on making slight changes to that very delicate ratio of cost/performance until the unit fits well relative to other units. There's a reason skilled players will consider spamming maxims but not mg42s.