I've personally witnessed a dual LMG squad of mine kill an unskirted M8 in 4 seconds at long range, back in old EiR.
Yeah, it's not even worth to consider how crappy an M8 is without skirts... T17 was a simmilar story, getting killed in two shots by ununoctium's grandma, until it got the skirts.
IMO, there is no problem at all with light vehicle spam. To quote AmPm himself a patch or two back : use an ostwind.
FYI ostwind can't penetrate the british staghound from the front, and the panzerfaust doesn't do much damage to a T17 as compared to a regular.