I've watched probably 6-8 Mach-E review videos since the embargo lifted yesterday morning and it's pretty impressive overall. We are all drawn to the efficiency, range, power, and automation prowess of Tesla, but many automotive buyers are going to be tempted away by simple everyday usability features such as heated steering wheel (which may or may not be coming to MY/M3), an instrument panel directly ahead, cargo area cover, cross-traffic warnings, foot activated liftgate, a few more tactile controls (such as the physical volume knob), and Android Auto / Apple Car Play integration. These are common features that many buyers are used to getting and affect day to day usability possibly more than quicker acceleration, longer range (for people that don't drive as much) or dropping $10k for full-self driving that's still in beta.
I would actually consider the Mach-E Premium but still prefer the Model Y overall (as does my better half, whom is hesitant to consider the Mach E or Polestar 2).
On the other hand, as noted, hopefully the rapidly increasing competition from the likes of the legacy ICEmakers whom are finally waking up to real electrification will help push Tesla to deal with some of these feature deficiencies, as well as quality concerns, ASAP.