Opinion? Go look at any of his video tapes. He's a major holding machine. Worse than Connor Williams. Plus, his technique needs lots of work as does much of his game. Speed and quick opponents get by him, plus he plays high, thus can get bullrushed back into the QB. Who does that remind you of? For this they used a 1st round pick? Someone who needs lots of work and time (years) to develop into hopefully a better player?
There are Div I proven Left Guards still available that could be had in Day 3.
Marquis Hayes: 6'5", 330 lbs, 5.30 40 time, 31 bench reps
https://www.nfldraftbuzz.com/Player/Marquis-Hayes-OL-Oklahoma
Lecitus Smith 6'3", 318 lbs, 5.13 40 time, 25 bench reps
https://www.nfldraftbuzz.com/Player/Lecitus-Smith-OL-VirginiaTech
Cowboys pass up on a top 10 overall talent at DE, but instead take a project in the 1st round? That is not smart drafting.