No one gets offended, don't worry. :D But ranks can't be changed once a kata is approved. The reason why you consider this kata more difficult than a "normal" 7 kyu is because this is a new kata (published in 2023). Ranking problems (in terms of published date) were more generous in the past, but with the time, active members and power users started to rank problems more "serious", so now katas have lower ranks. For example, a very old 5 kyu kata would be today 7 kyu maybe. :P I suggest you to sort the problems by older in order to avoid harder problems for now, and tackle these harder problems in the future :)

maybe you "should" get more familiar with this website, before suggesting on changing its behaviour.

The kata has been solved 40,000+ times in JavaScript so it's probably not an issue with the kata.

The particular input should indeed return False, and if you are getting a test result saying that ... should be False then it's because the test is finding something that is not False.

So the most likely conclusion is that your code isn't doing what you think it is - in other words you need to debug a bit more.

edit - beaten by @Chrono79 :>

Your code returns strings, not booleans, that's your problem.

false   // boolean
'false' // string

Not a kata issue.