I wouldn't take my criticism of his technique as unduly harsh - by comparison, I think several members of the England team need to work on their technique, not just him (Joe Root and his front foot, Stuart Broad and foot movement of any variety etc.) I would have no problem with him continuing in the team if he were to tighten up his technique, as I think with a tighter technique he could be more successful. What frustrates me is that with the bat-pad issue, its an issue which has come up several times, and that has not been rectified, despite it being so fundamental at Test level. If he were to work on it and sort it out, as he did with his short ball issues, there's no reasons why he couldn't go from strength to strength.
Also, to prove I'm not just anti-Bairstow in every regard, I have no issues with his wicket-keeping.
I'd also like to clear up something - I did not call his technique 'horrendous', and am merely exaggerating the bat-pad issue, and, as with his short ball issues, it can be fixed.