He got completely exposed by the turds outside him moving across with no intensity or desire whatsoever. To attack him out of all the players on that pitch says more about the initial poster than Johnstone

Can't believe the OP.
Tom Johnstone has played 5 games this season. Missed 11 tackles. Made 36 Tackles

Tackles:
Wigan - Missed 2 / Made 5
Saints - Missed 1 / Made 9
Kr - Missed 1 / Made 12
Widnes - Missed 1 / Made 3
Castleford - Missed 6 / Made 7

The kid has 1 fairly rough game in defence and you start slating him?
It would help if his wasn't stood 30 yards in from the touch line leaving him with numerous defenders to tackle.

The OP has a long history of overblown reactions and singling out individual players.

In this instance, Johnstone provided the only point in the match that made me stand up and shout for the team - he never gave up on that try and took it superbly well; a brilliant moment for a young lad who has a bright future - but probably not at Wakefield - Shudds, Leeds et al will have taken notice. He was on the spot for some defensive howlers, but was badly let down by the people around him. As for the Shenton brush-off - that is his trademark and he does it to much better players on a weekly basis, so no shame in that.

Plenty of so-called senior players have plenty to be embarrassed about - Johnstone however, can probably look himself squarely in the eye.

It's not rocket science, a lot of wingers look worse in defence because usually they're seen to be scrambling across to try and stop their opposing winger going in at the corner [thereby it looking like they're failing in their attempt] but as many have pointed out above, it indicates a failure from the players in the middle to organise and slide effectively thus leaving the winger exposed.

Missing 6 tackles in a game must make him one of our better defenders, Miller and Arundel can miss 6 per half and still get selected.

Don't you mean season so far missed tackles
Miller 33.Smith 32. Riley 30. Hall 28. Owen21. Scruton 30. Lauititi 27. Washbrook 22.?
Arundel has only missed 7

But one of those was a crucial one against a part time window cleaner from Leigh.

Thought it was Halifax that the window cleaner played for as Leigh are full time

Whose told you that?

What?
That Leigh are full time?
or the part time window cleaner plays for Halifax

Either, or that Collis was at Manchester airport today.

I think you'll find it is well documented that Leigh, Bradford and London were full time teams this year. Not that it has helped London much, so far.

Ooops. Yes it was Fax.