I don't have an electronics background..

I have read in a number of places, that a 5V 2.5" IDE laptop hard
drive, can be fed 3.3V if you remove pins 41 and 44.

People do it to use such hard drives in low power laptops that feed
3.3V into hard drives.

Is this bad for the hard drives?

Is it enough power?

And why does this work?

When I look at a pinout, I see pin 41(Logic) and 42(Motor) are both 5V
and pin44 is labelled TYPE 0-ATA. Nothing about making it 3.3V.
And he just bends pin41 not pin42. and he bends pin 44. why those
pins and how do they let it take 3.3v?

People find they have problems without doing this mod.