Obviously, but additionally, providing validation on the frontend can help UX a lot.
Doing that can provide much quicker feedback compared to an error thrown at the user only after submitting a form, which can get especially annoying if the latter loses (some of) its values due to submission.
And one solution for that problem can be using a native picker.
I do understand what "client-side" validation is, but I wish it had a different name, because people think they can just validate client-side and they do not bother doing it on the server... for some reason, I do not know. It should be obvious though, right? Yet it is not.
