If you got rid of JavaScript, it will mean that a lot of things that can be websites today would have to move to an application on your computer/phone. It is just shifting the security risk somewhere else.
I'll take open and a slight risk vs closed and a slight risk.
I don't need anyone's approval to run native apps either, both my PCs run C apps I built from source and shell scripts I wrote myself without it, languages of my choice with implementations simple enough to write myself, not runtimes that literally no one that's not Google can afford to independently maintain. That's real openness.