I am not sure the light tank being spammed would be an effective strategy since they would probably be counter by enemy medium tank.
(it was a viable strategy with Soviet industry once, but not any more).
Imo it is worth testing.
Didn't you know? Buying more than one unit is 'spamming'
. If you know you're playing well against your opponnent going double T70 isn't unheard of and currently can seal the deal imo. Same for OKW, though luchs isn't as outright strong.
And if you're behind the enemy going hardcore T3 as SOV is a worthwhile strat to invest in anyway, to keep playing for enemy mistakes then into heavy (double T70 for ai and SU76+PTRS's (the supposed/forgotten counter to a medium no xD).