Honest question: how often does the code ambiguity due to lack of semicolons lead to non-obvious bugs?
I'm nowhere close to being a JS expert, but I've done some JavaScript-heavy pet projects and I've got an ambiguous statement interpreted wrong exactly once, and the cause was pretty obvious within a minute of looking at the error.
Good linters correctly highlight all missing semicolons as a symptom of sloppy, negligent, careless programming (or pointless syntactic showboating). It's also technically syntactically valid to omit braces around single statements after if, else, for, and while statements, but idiotic and dangerous to do that, too.
