ok guess I'll expand a bit. First off I'll explain what I think is the history of players doing it in general. A few years ago everyone scoffed at it, obviously not a very good strategy because no one does it. Along comes a guy Kelisitaan. If you have any knowledge of mid to high-stakes full-ring NLHE games on Stars you'll recognize the name. From what I know he plays from 400nl up to 1knl and I think even higher to 2knl or 5knl. Not many full ring games run higher than that. Anyway I just recently read the thread on 2+2 but he didn't have an account there and a few people were talking about his minraising and saying he was weird and probably didn't even win. So of course he makes an account and posts there giving screenshots of his winnings and cashouts. Basically he had almost 300k in the account and cashouts of thousands of dollars each week. Basically he was killing the games bigger than anyone was before. And to my knowledge that's when people started exploring it being a good strategy.
Basically here's how he does it. He runs extremely lag by most full-ring standards, I think like 24/20ish and exclusively minraises. I've played with him a bit at 400nl but not enough to really explore his game any myself. But from what I hear from people I talk to that play with him basically he's extremely good at adjusting. He minraises preflop with a wide range and if people start 3-betting him light he'll 4-bet light. If people start calling him light he can fire a wider range. The way he wins is he out-adjusts people and is able to outplay them postflop.
But basically the advantage to the minraise is it creates deeper effective stacks. This allows more mistakes and gives a bigger edge to the more skilled player. I've been experimenting with that recently and doing it on the button. I don't like doing it earlier because it gives a cheap price for the button to call and has position with the deeper stacks. But I can then call with pairs and set mine, fold and make it a cheaper steal, or make all kinds of adjustments that end up favoring me since I'm in position .
Another reason for them is shortstacks. Shortstacks generally are pushing over your raise with premiums and you can't call a lot of the time. So the smaller raise gives you a cheaper bluff and they still can't really call with implied odds
hands because they don't have the implied odds being shortstacked.
But another strategy is limping a lot. It's similar to the minraise but there are many successful players who limp a ton preflop. They can then limp-raise if anyone squeezes and as long as its done with their whole range (or a balanced range ie they can't just limp low pairs but raise AK/AA/etc.), and they are able to adjust to the way other people play it can be profitable.
Anyway my main point was don't just take catch-phrases like "minraises are bad" as the gospel truth. I think now more than ever it's important to think about everything. There's more and more strategy material out there every day, and it all advocates the easy way to play. Less and less people are going broke with top pair. More people realize that big hands want big pots and small hands want small pots. Anything done to make people like that uncomfortable is becoming more and more profitable. It just takes a lot more thought and is very tough to perfect. I just think the way to continue to beat the games as they get tougher is to adapt and continue to think of unconventional things that can be used to exploit the current tendencies. So although I'm not saying minraising pairs from EP is a good strategy, I just said it's not necessarily bad if it is balanced. Also in lower-stakes games it's probably best to just raise good hands and limp speculative hands a lot because people fold less and probably don't pay a ton of attention and the money comes from getting paid with big hands not from outplaying them postflop by making moves or anything. Obviously adjusting has to depend on the tendencies of the opponents you are playing against.