Shit post, not very smart bloke.Hinkley as soft as butter. Let a throwaway line on insta completely unhinge him, and cost him (or rather more likely his club) 20k. The club quite soft too. Had a chance at a home prelim, yet didn't fire a shot at home, getting thumped by 80+ points. Supposedly needed the same throwaway line on insta to fire themselves up, apparently chance of home final not enough (although I suspect their abject humiliation the week before was a good deal more motivating than any social media post). As a result, now need to fly to Sydney instead of playing at home. If anything people should have been taunting Ken with the flying arms motion. Ginnivan has youth as an excuse , he was a child 3 and a bit years ago. Hinkley's childish behaviour on the other hand is off the back of nearly 40 years of adulthood. Also Ginnivan a player, not the senior coach, and not posting on social after a win to taunt the team he's just beaten. How anyone can see their actions as same-same is beyond me.
Shit coach, Shit bloke. Port would do well to part ways with him ASAP. Coaching is a relatively young man's game. Rarely does a bloke approaching 60 get their team a flag. By that age, the old blokes have usually won a few flags, and get moved on to provide false hope at their final destination (Malthouse, Pagan, Clarko for example). Unfortunately for Hinkley he has no flags, in fact right now he has no prelim wins (not to mention straight sets to fill out his list of coaching achievements). His 1-wood is leading good lists to bad finals campaigns.
So to answer the OP, yes Hawthorn did expose a mental fragility, but 'expose' is a bit of a stretch, everyone knew Port and their coach had mental issues before his post-game antics, so it was more a reinforcement of Port's issues than an exposure. The 80+ point loss the weak before laid their weakness pretty bare.