not really Young Bucks but I think anyone in their industry that’s a long time veteran and been through whatever schools, indies and companies knows how to work as actual heels and faces.
Nope. Even the iconic Ricky Steamboat said he didn't know how to work heel, and so he was a face for his entire career. Same with Kevin Sullivan. If those legends can admit their shortcomings, you can admit Nick & Matt's. 
It really just comes down to the choices they make to portray what they are doing. So I think it’s kinda disrespectful and short sighted to say any vet don’t know how.
See above. I listed two vets who said the exact same thing about themselves. To tale it a step further, we could say that Magic Johnson didin't know how to play PF as well as Karl Malone. No disrespect, just a fact.
Also, I don’t believe with what all these guys in any company does, there is one way and only one way to do things and if you don’t do it that way it’s wrong.
I mean MHassan when you think of it was a BABYFACE.
I guess you mean Mohammed Hassan. His character was a heel since his introduction. He claimed to be a victim of American racism who would make society pay for their And some of the ways that Edge has been doing his thing with Roman, one can argue that he is the heel. Does that mean than Edge can’t be a Face or Hassan a Heel? Naw.
Also I think after the NWO, the way a Heel can be played has changed and can never go back.
...but FTR are classic old school heels. They're straight out of Mid-South or Jim Crockett promotions. 
More people are the cool heels than the hated heels,
That's a problem, not a selling point. Just like that wrestler's (I'll find who it was) tweet last week said, "if you're a heel, be a heel. Everybody isn't cool". I see no difference be it that style and what The Undisputed or Sami Zayn has done
Sidenote…. I don’t like we we say…. “This wrestler don’t know how to work”
I remember for year people said that about Cena and Roman.
Cena & Roman weren't always good workers, but they worked on their crafts, and now have HoF careers. But then you hear later from different people “no no no he is a great worker”
Like you say about the Bucks.
Everyone may not have the same level of acrobatics or technical skills. But for the most part all these guys that are long time vets know how to work….. hell even the Miz
False. Nia Jax, Mable (R.I.P), Kris Statlander, Jack Evans, and even RVD were "seasoned", but they all had reputations for being unsafe. (RVD toned it down after Kurt Angle & HHH started giving him "receipts") You can be a veteran, and not be a great worker. There are probably people who've been at your job for a long time, and don't know anything. It happens, Breh. 
