The hazard is the he doesn't have full, natural, comfortable control over his bike. There's simply no comparison between the maneuverability of a bike like this in a challenging reflexive situation to a standard motorcycle, period. That's an increased hazard to not just himself, but others on the road. The same goes for people who drive with their dogs on their lap.

If people like these want to increase risk in their own lives, ok, fine. But we have to drive along side them, or behind them, or in the coming direction of them. And to have my own risk increased because some guy is struggling for "look at me!!" attention, or because somebody can't pay 100% full attention to their driving because they are willfully emotionally and reflexively distracted coddling their pet, is bullshit. It's unnecessary additional risk.

Be "so sick of hearing" it and throw a short-sighted hissy brat-tantrum all you want. The reality of it is that it's increased risk on the road, and you're blind and/or ignorant to insist otherwise. Risk your life, not everyone else's.

Edit: ipad spelling auto-correction sucks.