I was making a comparison, and, you have certainly proven not to really understand what they told you at school... You can use more than the bare minimum...
But the components inside did. Cheaper components, etc...
These are possible issues of some drives, but not what will exactly make a "visibly working drive" suffer to death...
You might have been a lucky user or your HDD might be a really good quality one, but, again, that's not the most common case scenario.
And, let's just stop this conversation here... we're getting off-topic. If you want to continue the debate, I will gladly keep talking to you via DM or in a new dedicated thread in here:
https://www.psx-place.com/forums/off-topic.20/