windows 10 is defective

is it true that windows 10 is defective? because I have no problem

I have windows 10 and I have no problems. I have noticed alot of the times people have problems is when they did the automatic free upgrade from 7 to 10 by windows. The upgraded must of fucked up or something and caused some sort of corruption of their windows.

I have windows 10 too and it's not defective but some laggy :/