This is the paradox of choice. If there is 1 option, a person gets it and it's not perfect, but it's fine. They know what they're getting and make it work. If there are a bunch of variants there is a greater expectation that one of them will perfectly fit the need, and they are always left wondering if a different one would have been better, and are thus left feeling unsatisfied.

Some choice is good. Too much choice is problematic.

This TED talk probably explains it better. https://www.ted.com/talks/barry_schwartz_the_paradox_of_choi...