I'm afraid to link said video because I might annoy the mods.
Basically, it says that kanjis are recommended, but aren't 100% necessary. It says that, hypothetically, I can write everything in hiragana/katakana. They're definitely welcome, but if I choose to do so, I can, hypothetically, can write everything only in hiragana/katakana.
Ignore how it'd make me difficult to understand easily. Is it true?
by Compodulator