Probably best to try some, buy some acorn flour from K-Mart, to see whether it’s worth the effort.
In my experience, Koreans kinda it, most other people trying it do not.
Also you need Olympic level chopstick skills to actually eat the cold, wriggly, slimy slabs of sadness.
Dotorimuk is a common Korean dish, made using acorn jelly.
A bit of an acquired taste, but use of acorns isn’t that unusual!
https://www.maangchi.com/recipe/dotorimuk-muchim