Maxim is not overnerfed either.
If a unit goes from brain dead pick to not being used at all it is an overnerf. Its not that the maxim fell out off favour a few days or weeks it was a long time.
It was nerfed so hard it needed some fixes to have it be even usefull or cost effective. The small fire sector increase and band aid deathloop fix didnt cut it. It needed a vet/muni ability to be of meaninfull impact. It did get the usf treatment of feeding it muni to be most impactfull
So it was overnerfed but the small buffs changed that to nerfed hard. Now if wiped axis players recrew it pretty often so its mostly in a good spot imo.