I don't disagree, but I think there may be better alternatives to Electron in the not so distant future. I don't think the concept of Electron is bad (i.e. one API regardless of the target platform), but the execution of that concept is.

I strongly believe we will see some major improvements in the performance of Web apps/Electron, since (a) there is a lot of incentive (b) there are many easy wins to be had in terms of performance.