As my professional life has me flying a lot of types, I do sometimes use MSFS to familiarise myself with cockpits, switchology, etc. It is also probably the least worst of all the main commercial sims for performance and handling qualities but to be honest I don't usually trouble myself with that aspect. But yes, for learning your way around the controls, it can be quite useful especially if, like me, you might be flying a dozen types a year.
That said, the types where I don't have the benefits of a grown-up to check me out, usually there's no readily available sim model either. For those I usually spend hours to days on the ground teaching myself into it.
G