I was giving this some thought before answering;
I think the term "muscle car" will mean different things to different people.
When I think "muscle car", I think GTO, BB Chevelle's, Camaro's, Nova's, and Vette's, 428 & 429 Mustangs, Hemi 'Cuda's, etc., etc..
I've heard SB Camaro's, Mustangs, and Mopars called both "muscle cars" and "pony cars".
So I think its a matter of "personal perception."
Todays young generation is just as fanatic about their V6's and 4 cylinder cars as we are about our "muscle cars".
Therefore, I think there's alot to be excited about when it comes to the V6 Camaro.

The V6 in the Camaro offers very impressive performance.
For those among us who are younger, and have grown up driving V6 and 4 cylinder cars, which they often modify to increase performance, the V6 Camaro offers the same, if not more, performance, at a price most can afford.
I'm not sure that
I'd refer to the V6 Camaro as a "muscle car", but I will tell you that I'm
VERY excited about it. And if it is referred to as a "muscle car", I have no problem with that.
After all, when you look at early "muscle cars", the bottom line is, while appearing as "sleepers" from the outside, underneath, they offered a high level of performance. I think the V6 Camaro fills that bill nicely.