I would ignore this guys information. Not a reliable source.
I´m astonished to hear about crankshaft problems, I have not heart about one in any forum I read during the last 2 years.
I don't know on which other forums you have visited but certainly you haven't visited enough on here to say you haven't read about the failure before. I had the big end go on mine at only 350km and I had mentioned it couple of times on here. Don't know how you missed it.
Only elefants do not forget. My ears are not nearly as big
The source of that information - "Oldbmw" - is one of the luddites from the UK forum. There seems to be a general prejudice over there against the new bikes, based on, well, on the fact that they are new! It's the same kind of sour bikesnob nonsense you find in many "kickstart clubs" here in UK - if it isn't ancient, dripping oil, and made in UK well back in the last century, it isn't a "real motorbike".You can see these sorry old fools clustered together at the local bike night meetings, gradually having to move back from the spreading lake of oil from underneath their sagging machines. They rarely condescend to speak to anyone with a "foreign" bike, and genuinely believe that they are the last bastion of a past golden age of motorcycling. Which they are of course. The rest of us are too busy enjoying this golden age of motorcycling to give much of a damn.