It was 100% because the existing Electron version they were using was ancient, a giant pain in the ass to update, and represents exactly zero revenue for them so they hadn’t bothered putting anyone on fixing it. Every tech company has the ticking time bomb in the corner like that.
The tariffs are irrelevant *in the US since the DOT won’t do safety testing on them, so they aren’t road legal. I’m honestly not even sure what the point of slapping tariffs on them was other than signalling to automakers that they won’t face any competition.