I have never understood the reluctance to draft a guard in the first round. Having solid starters at every position on the OL is mandatory If you expect to have an OL that can both run and pass block. If the Dolphins believe Vera-Tucker is better than the players they now have playing guard, I would have no problem with them selecting him with the 18th pick.
I prefer a DE, LB, or RB with the 18th pick but if they decide to draft another offensive lineman with that pick, I would understand it based on how the OL regressed over the latter part of the 2020 season.