If the OS doesn't get updated, then some of those electron apps might stop working properly as they are expecting to target a particular version of Chromium.
It would be a bit smarter and generalized than that, it would detect new chromium 'version bases' and differentiate based on that. Eventually it will stop working, but if you don't update your OS after a certain point, new app versions wouldn't work anyway, or they would fall back into standard mode.
