Having seen the highlights I can only assume the referee didn’t think the shirt pulling prevented an obvious goal scoring opportunity.
I agree there’s a subjective element to this BUT To receive the ball that close to goal, even with a couple of opponents plus the ‘keeper ahead , is an obvious...
I haven't seen the game yet but I’ll look out for this when I do. I can only presume the ref didn’t think it was a DOGSO as the pulling was blatant according to Sky text commentary.