damn

https://docs.python.org/3/library/stdtypes.html#truth-value-testing

Fixed, thanks.

The description examples are different from the actual test cases:

Description

knight_to_h3(["f4"]) => False

knight_to_h3(["f5"]) => True

Test Cases

test.assert_equals(knight_to_h3(["f4"]), True)
test.assert_equals(knight_to_h3(["f5"]), False)

If by "real world problems" you mean clients that make confusing statements, then yes, I agree.

The description is confusing: decrease of 1.5 percent and increases of 0.5 percent. However, from the examples, they mean different things.

It is your point of view. Yes, they evidently mean different things:
"the prices of his old car and of the new one decrease of 1.5 percent per month. Furthermore this percent of loss increases of 0.5 percent at the end of every two months."

I labeled it an an issue... I guess nobody is going to fix that

I don't see why I should fix that; somebody said in his post "Kata shows what real problems will have to be solved by those who choose the profession of a programmer." and I can add that the problem comes from a real person.
I know that many people have difficulties to understand what happens but the example should help to see if it is understood and you understood it in half of an hour which is not bad for a confusing description:-) Sorry not to please you.

The description is confusing. There are two almost equal statements: decrease of 1.5 percent and increases of 0.5 percent. However, from the examples, they mean different things. First one is taking a percent of the values, second one is just an addition to the percent.

I labeled it as an issue, but looking at this discussion, I guess nobody is going to fix that.

Not a suggestion.

it's so downrated by highly experienced users who think it's too trivial and boring that I doubt it'll be out of beta any time soon, so 7 kyu or 6 kyu doesn't really matter )

Nice kata, but it requires some math knowledge (even though it's a very simple one). Probably 6 kyu is a better option just because of math?

Any discrete math course covers sequences. This one in particular is an arithmetic sequence.
I suggest to study discrete math as it often helps to find O(1) solutions to different problems like combinatorics, sequences etc.

thank you!

my bad :(

read description...

What if someone's name has three terms? Like, Marc Stutter Harris?

0. It's faster to compare (IMHO) than '==';
1. It's more consistent and obvious;
2. It's recommended by JSLint, for example.