“Only” is the only word I take issue with here. Because anyone who “only” works with a particular set of tools sounds like someone who is inflexible and adapts poorly, doesn’t learn new things well, will require a lot of support from other people for things they don’t know how to do, is willfully blind to alternatives or better ways of doing things, has an attitude problem, is a bit arrogant, or is a dinosaur or some combination of the above.

Specialization is great but rigidly pigeon holing yourself is self limiting.