I find these posts interesting - the ones that say "My machine will only perform properly if I'm using _______ thread."
From that, I can draw several conclusions:
The finicky machines could be PIDA's and more bother than they are worth to fight with them
The user/operator is very finicky and/or doesn't know how to operate the machine properly
Some of the unfinicky machines are better choices for some of us.
But if machine, thread, and operator are 'good to go' - life is good on that planet at that moment.
There actually are some threads that I avoid using for anything other than overcasting a raw edge before washing the fabric - and even for that purpose, I try to use a lighter colored thread than whatever color the fabric is.
PS: Some thread(s) probably are better than other threads - I just think that a finicky sewing machine would be frustrating!