This attitude is dumb, people don't just have one thing open on their machine at a time.

If you're designing software like a music player (that is, something people are likely to want to keep running in the background while doing other things), you're just giving people a reason to switch to something else by taking up a bunch of memory carelessly, as it'll be one of the first things to go when the user needs the memory.

Definitely it has become a selection criteria when picking tools. Electron? I don't care what a developer uses, nor how fun it was to use. I care about end results.

But to be fair. An Open Source project done in someone's free time for the love of it and shared freely in the wild as a humble contribution to humanity for the price tag of a Like in a forum, really should use whatever the author feels like using, as long as they don't treat it as a product and attempt to market it like it was done with care for anything but the developer's ergonomy. For what is worth, it could be made of Minecraft Redstone if the author feels like it, and nobody can judge them for it.