I can't find the Github-issue atm, but I'm guessing it was motivated by security (there's been a bunch of RCE-exploits in Electron), technical debt, and perform

I can't find the Github-issue atm, but I'm guessing it was motivated by security (there's been a bunch of RCE-exploits in Electron), technical debt, and performance (Muon was an Electron-fork, and Electron is more than just Chromium).