I don't know, if you think about it....these dang things are meant for years of use without a problem. I don't think spending lets say....a month ripping CD's would have any detrimental effects.
Especially because of the way of electronics, who's to say that thing wouldn't break down 2 months from now regardless of what you did.
Personally, I'm not too concerned about things like that. I've had my PS2 for something like 7 or 8 years now and it JUST got to the point where it's not playing DVD's but games are fine. To me it just seems to be one of those things where it's something exaggerated that people are paranoid about without any substantial proof to back it up......kind of like shaking a baby harms it.....Nonsense!! (just kidding about that last part)