In case you think I suggested Mochi as a superior product, I didn’t. Actually, I pointed out that it’s (also) missing features which become crucial at some point.
The thing is that there is no actual (easier to use, more modern) real alternative, when there should be. There’s either Anki (convulted, tries to do everything) or stuff like Kitsun, Mochi, Quizlet, Bunpro vocabs etc. (half baked and most of the time impossible to extend). Pretty sure it’d be possible to have something in between.
Regarding the (probably arbitrary) 5MB limit, yeah, that’s BS. And considering like half of the Japanese decks don’t work because of this (probably also true for at least Chinese), it’s likely doing some real damage to the product.