I believe parent commenter was thinking of if expressions, which are quite similarly short - and I’m also on the opinion that they are much more readable and less prone to mistakes (like how does nested ternaries operate in your given language)

The problem with ternaries is people getting so excited about it they build some one line monstrosities that really should be broken down into more lines

And for what's not a monstrosity to begin with... It's not a monstrosity to begin with, you ain't gaining much

I'd kinda like to see a language that allowed ternaries but only when the components were sufficiently simple, e.g. no compound ternaries or even no more than a single arithmetic/boolean operator. Though enforcing it with linter rules is probably the better option.