WebAssembly's goal is to provide a simple VM with performance good enough for the web to compete with native programs and to unlock use cases that are not possible to run efficiently in JavaScript.
The syntax that the developer see is totally irrelevant here.
Or, to put in another way: today you don't complain about crap tech pushing out good tech, tomorrow half of the jobs in your field require you work with the crap tech.
Even if that choice is a familiar JavaScript-like language, it still proves the point that the web is now open to whatever the developer wants. So in that sense, I applaud and welcome things like this.
Please do port all of most-hated languages to run with WebAssembly and create new ones that I also don't like. It more or less means that languages I love can be ported and that new ones I will love can be created.