Is it very important to know the name of the radical for the kanji?
It is one of the vectors you can select under the radical questions. I understand that it is helpful to know the radical of the kanji, but wonder how important it is to know the name of that radical?
I personally don't think it's helpful at all, knowing the name of a radical won't really make you better at Japanese, you'll just be able to look up kanji more efficiently as far as I know
Depends on how much you like kanji and if you want to discuss about them, their meaning, etc with Japaneses. For example, I like kanji and often end up reading or talking about them, so I remember a few of them. Like in etymological dictionaries which often explain the original meaning or reading by using the different part. Or in conversation with some japanese friends. In those case, I do need them. But it's more like knowing an addional word which in turn allow you to read more things. It's not like you need them to learn the kanji. Just recognizing the radical will be more useful for example. Also, even japanese don't always use them or know them all.
So up to you. It's more like an optional technical knowledge which is useful if you end up reading a lot of technical dictionaries for example. Basically, if you love kanji and want to go further than most learners, yeah, it will be useful. Especially once you start to use JP dictionaries. Otherwise, not really.
Yeah, they’re fun but useless (for anything besides bug reports). They absolutely won’t help you look up a kanji, unless you’re talking to an LLM. Only learn them if you want to.
Knowing the names isn't necessarily useful outside of very specific situations but understanding the various radicals can help with guessing meaning and pronunciation.