Picking your technology stack based on "what you prefer working with" rather than "what works best for the application you're building" is piling on technical debt before you've even started your project. That isn't saying Gallium is necessarily the wrong choice over Electron; it's saying you should evaluate them both and use the one best suited to what you're building, even if that means learning a new language.

(Obviously this is a ideological argument rather than a practical one because most projects don't have the budget for devs to do that much prep work like learning a new language, but practicality is boring. :) )