I think the greatest hindrance to /e/ is the fact that so few devices are supported. The article lists Fairphone as a supported device but that doesn't retail in my country. Most Chinese OEMs (that form the bulk in my nation) won't be supported by it. I have had a Nokia and a Samsung but even those two models are nope. One would need to go with the express purpose of installing alternative OS's and then purchase supported phones like Pixel probably, if they wanna indulge in this. But normal people aren't gonna do this. They are going to purchase the phone that fits the price vs performance ratio for them rather than alternative OS criterion.