I think Skura has been generally fine. I think he's average, and you're paying him far less than what you would have to pay somebody to be average.
FilmStudy does great breakdowns of Oline play and defense.
https://www.filmstudyravens.com/
Obviously don't have week 4 grades, but through 3 weeks, he gave Skura pretty average marks. Obviously LG is an issue, but if you have two tackles who have played well, an average center, and an All-World RG, your offensive line really should be considered pretty damn good. And generally, I think its been fine.
My issue with fans is that I was told that the reason you move from Flacco to Lamar is because Lamar can move in and around the pocket well enough that you don't have to invest in 5 stud lineman to make him successful. So was that not true, or what has changed?
I'm in no way a believer that one bad position on the Oline derails the whole group. Will be interesting to see what week 4 prognosis looks like from people who evaluate this stuff better than I can.