BDS is, and I mean this descriptively and not as an endorsement, a big deal. It has been a focal point of left grassroots politics in the West for the last several years and is one of the major pain points for campus politics. I would say a simple majority of all communication from Jewish advocacy groups the last few years has been around the BDS issue. The US Congress has considered legislation around BDS. I don't really know anyone on any side of the politics divide that doesn't take the issue seriously (whether on a symbolic or on a policy level).

I suspect when you made your comment you thought you were saying "the Emperor has no clothes", but it was actually more like "I don't know anybody who voted for Nixon". Surely the better strategy in a case like this is at least to bother Googling to see if it seems like an active thing or an irrelevant fringe thing.

SodaStream took it seriously enough to move their factory out of the illegal settlements

Perhaps it is a cultural thing, but I've been boycotting Soda stream throughout my adulthood. In fact whenever a conversation arises around me, I advice everyone (with positive feedback) to do the same. Whenever I see Soda Stream in the wild, I cringe a little.