First why would you use web technology to build a desktop app? I could understand if their wasn't a cross platform answer like python and java that are high enough languages that even middle school kids can learn to make desktop apps with. Yet lets default to language and markup language specifically design for a client server relationship.
Secondly from my experience electron runs horribly on linux and windows. I can always tell a desktop app uses electron on my desktop not just by the larger then normal amount of resource it takes to do simple task, but because it will randomly crash. It crashes silently and instantly reboots it self and try to act like nothing happen but it happens so often that I catch it when it does.
Thirdly, I am not about to act like I am some type of security expert, but this is just screaming at me security risk. Electron uses at least 4 engines, how and when do they get updated and security patches installed? Can the programmers stop upgrades of these engines to insure that their app will continue running as is? You can argue all things are security risk, but when you put so many complex engines in one app it is bound to make it difficult to keep up with all the security concerns.
I could keep coming up with more and more reasons why electron is horrible solution to a problem that already has solutions. The appear to webs to keep using technology they are comfortable with is horrible reason to justify this Frankenstein of a code base.