Trying to learn Japanese as a hobby via Busuu app and had this thought.

Just look at this common kanji. https://jlptsensei.com/learn-japanese-kanji/時-ji-toki-time-hour/

Or this one:
https://jlptsensei.com/learn-japanese-kanji/箸-cho-chaku-hashi-meaning-chopsticks/

Language has an influence on how one thinks. But this shower thought smacks of too great a generalization to me.

East Asians good at planning

This is already just patently false by painting with a huge brush. I live in Japan and I know plenty of people who are bad at planning. That said, Japanese society tends to value planning a lot and, because of strict work schedules, little time off, etc., people often do plan things way in advance.

I don't think kanji have anything to do with this. Korea doesn't use kanji (hanja) anymore in any regular way, so that would invalidate the theory.

There has been some debate about them being better at math because kanji for numbers are more straightforward, but I think that's been disproven IIRC.

Didn't know I needed to come up with a whole thesis🥲

I'm pretty sure there's a tons of example showing badly planned stuff in ww2 by the japanese and chinese army

你也可以不加思考就噴出一堆話，其實。 (zh-hant)

As for kanji, it's just practice and muscle memory, same as English spelling. Also, saying "East Asian" is just too broad.

I was thinking more about writing and less about speaking. Easier to fix goof ups in Latin scripts. Most characters are one or strokes.

And I did check if 'East Asia' is a thing.😅

https://en.wikipedia.org/wiki/East_Asia

That's a bit racist. Also kanjis are not hard, the rule is: top to bottom, right to left, the end.

But imagine messing up stroke 9 of 14 while writing 😢

why is that racist? things like that have said with german and engineering and taken seriously.

taken seriously

Same problem.

If that were true Hindi speakers would be terrible at math.