Per Jourdan, Avila was drafted to be a guard but there was always a thought that he could move to center if needed in years to come.
Nate Tice mentioned on his pod and Snead has used this language in the past but teams have become more interested in getting their best 5 playing on the line no matter what it looks like as opposed to the old way of just putting max resources into certain positions on the line like LT.
The NFL has changed and no longer do the best pass rusher line up across from the LT, often they'll be over the RT and sometimes, as we know, the best rusher is coming from IDL!