They don't view Pollard as an everydown back
Why do you think this? Zeke always clouded the situation, I think he's an every down back.
A lot of small comments over the years(I live in the area and have owned Pollard on multiple dynasty teams since he came into the league so I've been paying attention) combined with the way they use him.
I can't look up all that stuff and a lot of it was on radio or TV but here are some quotes from their RB coach, Skip Peete who took a unilateral job with Tampa. You are welcome to say or think that because Peete just left none of this means anything going forward. These comments were from last season and article linked. He talks a bit about he feels strongly about having a 2 back attack(maybe take note Rachaad White investors) and then adds some comments specifically about Pollard. Again I've heard comments like simlar echoed over the years by the likes of Stephen Jones, just can't find it for you:
[Pollard] played a total of 30 plays, and I think that's his max - as far as total play count - because then the juice doesn't become the same and he's not as quick, not as fast," said Peete. "When he got that long run on third-and-1, soon as he got to the sideline he said, '
Coach, I'm done. Done for the game. I've got no more.'
"Tony's obviously a very talented runner and good all-around back,
but some guys are race cars. Some guys are high-quality, expensive sedans and those sedans can go for a long distance at a very high rate, whereas race cars go very fast and quick and run out of gas."
Elliott is the "very physical, downhill runner", according to Peete, that hammers opponents into being tenderized for Pollard's cuts, and the latter is why the Cowboys understand Pollard will routinely average more yards per carry - seeing as it's Elliott doing the heavy lifting to set his counterpart up for the home run play.
"[Halfbacks like Pollard] are always going to have a bigger average, and make more explosive plays but, at the end of the day,
when you get into certain games, the race car can't handle that punishment because they get worn down.
I think you need both [types]," said Peete.