Javascript is a horrible language, this by itself is a good enough reason to use something else to a lot of people out there. I think the number of programmers who are currently doing JS but hate it and would jump to something else the moment it becomes viable is enormous.
Then there is also the issue of the proliferation of substandard JS programmers, a lot of them knowing nothing about basic CS principles, that are viewed as "necessary evil" today. Opening up that space to better programming languages will be a net gain on many fronts.
Then there is also the issue of the proliferation of substandard JS programmers, a lot of them knowing nothing about basic CS principles, that are viewed as "necessary evil" today. Opening up that space to better programming languages will be a net gain on many fronts.