Agree but why do you want to nerf all light vehicles ?
While the T70 is the biggest offender, all early game generalist light vechs (stuart, T70, AEC, and 222/P2 to a lesser extent) promote a style of play that I feel is antithetical to CoH2.
CoH2 is about squad tactics and getting an edge with positioning and micro and abilities in the early game and then transitions to powerful gun lines of combined arms late game.
The light vehicles on the other hand are extremely good at dominating the early-mid game. While there are "counters" to this (which is why they aren't completely bonkers OP), such as mines or AT grenades, a smart player knows who to use and abuse these vechs to keep them out of harms way until they can get the most damage in (usually a kill).
So whereas constant micro is needed to keep your squads performing well and gaining advantages, little to no effort is needed to get a lot of mileage out of light vechs. This incentivizes players to get an effective (if expensive) vech out and A-move is wherever you need. Forgot about that flank? Send your AEC! Big push coming? T70 is your man(tank) to plink away at advancing squads!
Of course, this often leads into headlong charges with these guys as soon as an opportunity appears, blowing right past an AT gun (especially easy vs Raks with their abysmal target acquisition) and scoring squad wipes without really even trying since these light tanks have so much lethality to them.
Basically, light vechs are now no-brainer units - good in
any situation. Because light vechs are so good, they promote dumbed down and frustrating play requiring an inordinate amount of effort of the opponent to counter it effectively whereas the vech can punish you quite severely ~8 min into the game with a much smaller amount of effort.