Yeah you are right on that but there still are many backdoors on plenty of applications that are made by American companies. We also know that some agencies wanted to put backdoors on linux kernel etc. In that case why would you not trust an open source app, and trust a closed source one just because of the nationality of developers
Plenty of companies started using electron for writing cross platform apps, these apps(electron) use JavaScript engine, which makes it easy to develop these apps but as a tradeoff it uses more system resources than your regular native apps. And when they all do it(discord, vscode, steam etc.) you ask, why the hell do I need these dedicated apps if all they do is just start up a browser? I can just open another tab in firefox or whatever and be done with it.