Steel actually has addressed them just its not the answer most people want to hear, the answer of "It's all OB's fault", so they say he hasn't addressed them. Its why some of us, including Steel, were overjoyed for the Tunsil trade, as expensive as it was, because we knew the Swiss cheese for an Oline was part of the reason Watson was struggling. Hell, Steel was the only person that thought they should have massively overpayed for Trent Brown. He praised the Texans when they brought in one of the best QB coaches in the NFL and the man most credited for making Russel Wilson, the QB Watson is most compared to, a franchise QB and his sole job was to help Watson. Maybe it helped, maybe it didn't but you can't say they didn't try and that Steel wasn't on board with it. Hell Steel has even called for OB to change his entire scheme to be more like the Clemson one so it better fits Watson but all most took out of that is "Watson is stupid and needs a simpler system".
I'm not here to defend Steel and he doesn't need me to but fair is fair and if you are going to pass judgement the least you can do is make sure a person actually did the crime you are judging them for. Other than flat out saying that they need to fire OB and bring in the HC Watson wants, something that worked so well for Cleveland, I'm not sure what other facets he hasn't addressed. As far as reading one positive take on Watson I haven't read one positive take about OB from a lot of people on here but that's a popular stance to take so no one calls them out for it.