Everyone uses the argument "is 3/4" that big a difference?" But I don't think that's really the point. The point is 32 1/4" arm length is an outlier. There's never been a successful OT with arms that short in the era where those things have been measured.
So while Skoronski may very well be able to play tackle in the NFL (he did in college better than anyone draft eligible this year), the real question is it worth taking an outlier very early in the draft and sticking him at OT where he would be an exception to the normal successful player there. The earlier you take him, the more you want to get enough value to justify a pick that high. If you have questions about the justification before you make the pick, you probably shouldn't make the pick. That being said, there's nothing wrong with taking a potentially elite OG in the top 10 and some team may take him to play him there (Eagles are rumored). But then the expected value changes for him.