It's only scary the first time! Really, trust me on this one. You'll either fix it or broke it completely. Yeah, that sounds encouraging...
I'm sure the tech has something else to do.
Now, on your main question - I doubt anyone knows for sure. But the hard reset is intended for emergency only. Just to work out a temporary hang.
I used your 'method' on one of my old rigs. No problems till the day I bought a new one.
IMHO, don't reset it this way! Nobody can't guarantee you anything. Just that my old rig was OK doesn't mean yours will be too.
I one thing I'm sure though, pressing the reset button many times WILL damage the computer. It's only a matter of time... It can blow to pieces (no, not literally) in two days or after twenty years.
I know I'm not of much help, I just think it's the right way of thinking in this case. And one more thing, I'm cutting the 'lectures' since I think it's a bit annoying...