I would like to offer http://openstreetmap.org as a counter example, where the best editing app is made in Java and the most used one is Javascript. There have been QT4 editors but they have never gained traction, I never found the problem to be performance between native and Java.
I think Javas problem was it's Unix engineering roots, with too little focus on UI, and perhaps a little too much of the "we don't care about performance"-mindshare. The latter being the only problem I see with some electron apps.
For those of you who aren't old enough to have been around, Sun initially pushed Java as a "write once, run everywhere" GUI language. It quickly became clear that Java applications were ugly and terrible everywhere, even in the primitive days of X11R5, when programs used a mixture of Xt, Motif, Qt, GTK, and raw X11 protocol (xv was awesome). Having a Java program for some task was worse than having no program at all, since it would discourage someone from writing a decent native solution.
Fortunately Sun found ways to make money using Java server-side, and Apple helped kill it client-side by not providing it by default.