I think 90% of the ergonomics issue is that people want dot notation and tab-autocomplete in their IDE so they can type obj.<tab> and get the methods that operate on obj. Which I agree, some version of that should exist, and there's no real reason it can't exist in Julia. The tooling is just not as mature as other languages.

Julia is far ahead in affordances to write fancy technical code and fairly behind in simple things, like standard affordances to write more ordinary code, or the ability to quickly load in data and make a plot.

I just think it's a misdiagnosis to blame multiple dispatch for this issue. It's much more about the Julia community prioritizing the needs of their target market.