On this, I'm going to stick up for little old Barry; how exactly is he (or anyone) supposed to explain to a brand new speedster how to phase? That's like someone without legs trying to explain to someone with legs how to run.
In order for show success, idiotic writing must, unfortunately continue.
I think it's about Barry this whole season, not just this episode. Barry seemed to be doing fine in Season One, Two and Three where he was exploring the uses of his powers or finding solutions intuitively. Any problems he couldn't handle, he asks from the team. This season, Barry has to be told what to do which is perplexing.
"show success, idiotic writing"

Is it any wonder many are complaining about this season?
