No, it sounds fake, and in no way am i saying that it really is fake. What i mean is, i never heard of, or experienced anything like that with 50 to 60 Jws.
Maybe, because they are motorcycle riders, they are more open minded, flexible, and human, than the average JW. I know that when i was "in" many years ago, brothers riding motorcycles was actually frowned upon, and while they wouldnt outright say it, it was used against you. Even privileges were held back in some circumstances, because of it.
So, maybe motorcycle riding JW's are already open minded, more so, freer thinkers, and not so "in the box", making them more level headed.
In my old congregation, there would have never been an elder, who was a motorcycle rider, maybe MS's, but not elders.
I have personal knowledge of this, intimately. My father IS an avid motorcycle rider. He owns a Harley sportster, AND a Valkyrie, and he is indeed considered a "rebel" in JW land, trust me.