Agree to disagree.Except it’s not a generalization, it’s a fact. Nobody wanted any of the 10-11 shows that spun off from TOS. It’s not a measure of how good or bad they are. It’s simply that the producers of those shows did not ask the general public if their show idea was something anyone wanted before they decided to produce it.
There's always somebody who wants a spinoff, be it imaginary or proposed. In the 80s, somebody imagined a new crew on a new Enterprise, and were no doubt disappointed by TNG. It's the nature of the beast.
Of those 10-11 spinoffs, I can guarantee I wanted one of them, at least.