Here's where expectation should be set for both candidates and interviewers. The point of solving Fizz Buzz problems is to open up angles for discussion. What would you do differently with this problem, at this scale, for this integration etc etc. If someone writes crude code, I'd ask if they follow style guides or conventions. If someone writes overly fancy and clever stuff, I'd ask if they ever have to maintain shit. There is not much value in talking if all candidates would write "import fizz-buzz-solver from 'fizz-buzz-solver';".

You see, the whole Fizz Buzz is nothing more than a prop to allow me to find out what this candidate can actually do. Anyone can include a package and critical thinking differentiate smart ones from the pack. Heh, if there is a package for any and everything, most devs would be flipping burgers instead of doing original work.

Believe me, most problems you think of as original, aren't original. It's not about solving problems either, it's about repacking the solutions into something to sell, or making it popular enough so you can make money off it.