Well, Splatoon is first and foremost a skill-based/action-y game. So there's a bit more room for different opinions I think. I just don't think the Bubble Blower is a good special. At least not in non-competitive play, which is where I do my playing. It's (and also the Sting Ray, which I've stated I dislike) uses are too limited for me in a game where every other special can be used 3 times a match to good effect. There are entire matches where I didn't have a good opportunity to make proper use of the Bubble Blower or the Sting Ray, and that just doesn't cut it for me.
Like I said some time before, it might be good in Clam Blitz, but I haven't really tried it there. Even then, I'd rather use Ink Storm.
I'm not trying to be contrarian or some kind of Splatoon hipster or anything.