Continue from the issue below (because it was being derailed):

I think you misunderstood. Nobody was mainly talking about the assigned difficulty of the kata. Homework katas is a kata quality issue: if I can put together a seemingly random diagram and publish it as content, nobody will treat content seriously anymore as we can then just procedurally generate infinite amount of them, that trains pattern recognition rather than the ideas.

And many other similar tasks...

First, lots of the katas you linked are irrelevant to the topic. Second, so what? Just because there are already many approved offending katas doesn't justify you adding more fuel to the fire. In fact some approved katas are being retired for not achieving kata quality standards.