Bullcrap, solid means he belongs in this league and is average which he is and knows the system. I have high hopes for Ingram but Eno is still more proven till that happens. Eno is replaceable, but not up to the same easy transition since we are knee deep into the season and one needs to know the offense. He can start in stretches, and he was probably not complaining about not being the main back but wanting at least some touches which he was not given, but I do see why the Cards released him because he probably went off after a win and he is just average for his role
I also do not think the size factor makes him automatically a liability because I saw a back named Stump Mitchell play for the Cards who weighed in usually around a whopping 185 lbs playing in a league which was much more brutal, and he did not miss much time being highly productive. I will give Eno his due, not good or great, but he is a solid for what he is. Do not mind the release because Williams if healthy is just as solid if not more with experience and you have the potential in Ingram
He can't pass protect. He has a drop issue and he doesn't play teams. There are all things 2nd string backs need to do. Especially ones that are modeled as 3rd down backs.
I would not be surprised to see Eno out of the league within 2 years.