1 out of 200 people on the job market can't pass FizzBuzz back then. Today the odds are much better because they teach FizzBuzz on week 1 of bootcamp, but 1 out of 200 still won't meet some absurdly low bar you set for them.
Note that this is out of the people on the job market applying for these jobs. Most of those people will never be hired for a coding job and so they'll be applying to every job they see on LinkedIn for a year or so.
This is worse for low barrier job portals. 1 out of 2 may be able to pass FizzBuzz out of applicants from HN. There are a lot of people on HN who hate tech and are burnt out. A lot of these guys hate Next.js but will learn it for money. Half your applicants on LinkedIn don't know the difference between Node.js and Next.js and will go into the interviews without checking.