If you believed everything you read in magazines (or forums),...
I read that article and wondered about it myself. If you pull the slide all the way back with no round in there, let it lock, then release it, the magazine is getting a little bit of work, but no more than with any other gun.
The point is, and a lot of people don't realize this, is with this gun, or any Glock type mechanism, there is no need to fully pull the slide back all the way. With my SR9, I just have to move the slide back about 1/2" and then let it go forward and the trigger is reset.
There may be some rubbing between the bottom of the slide, but I would think you would wear out your finger before you would wear through the plastic follower. If you are worried about it, remove the insides of the magazine.
I did quite a bit of fluff and buff on my SR9, and took it to the range today. I asked my buddy to shoot it and see what he thought. He thought it was a big improvement. I had too much stuff in my range bag and managed to pull a muscle in my back taking it out of the SUV, so I only shot 10 rounds through the SR9 myself, but all but one was touching. Compared to before, this was a big improvement.
I know that a person that is "a good shot" can adapt to a heavy or bad trigger. However, I'm reconciled to the fact I'll never be a good shot and a good trigger makes a world of difference to me.
Incidentally, after I finished with the gun, I tried it with and without the magazine disconnect. I couldn't detect any difference, so I put it back in. My only complaint with the gun now is that the magazine release is a little sticky, but not enough to warrant me working on it.