Millions of engineers use them, since decades!
and vacuum tubes have been around sice decades.

If your circuit is designed properly, then (knowing the restrictions of breadboard!) the breadboard will not turn it to work improperly. That's absurd.
No, Kai, not even absurd by what you have posted elsewhere. You have very actively discussed ground planes, analog separation and more - how do you propose to achieve that with a dreadboard?

Erik