Right. People are dealt two cards in the big blind, they look down and see 86s, they automatically think "not good enough from the blinds" because that's what they've always thought, and they don't often enough adjust to what happens when it's actually the SB that opens and he has a super-wide range. This gets exploited by most regs who steal relentlessly in the SB. Look at the short-stackers (who, like them or not, at least know how to steal blinds) - they typically open 50%+ in the SB. What's funny is that even the regs who open this wide in the SB don't actually know how to defend against it in the BB. They just muck. Exploit that by opening really wide.
But also counter the wide openers yourself. If you 3-bet a polarized (but really wide) range, their best bet for adjusting to that is 4-betting/folding very (very very) often, and so few players, even good regs, do that. If they want to keep opening 40% of hands, they're going to have to 4-bet about half the time that I 3-bet in order to turn it back into a win. How many people do you think do that? Even mindful nonbots?
And, of couse, K9s is a highly playable hand in the BB when the SB opens. Call and see a flop. Float often. Raise often. Just don't fold very often. Their range is really weak and you have position; blind steals are "supposed" to work from the button because they have absolute position. It should NOT work from the SB, but it does because people don't adjust well enough and fold by default. Don't be that guy.