For an answer to that.... you need to define "support" in a meaningful way..... from my perspective.... there is no service manual, the dealer experience varies significantly (there is one in my city of 1.5mil.... next one is a 8hr ride), there is not the "Harley modification community" ie.... parts, service, third party support..... and .... unfortunately(?) not likely to ever be the scale or BMW attitude for it to be any different.
On a personal level.... I expected nothing else and am happy with the bike.... but it is nice to vent every now and again! I quite like how they are not common.