* Would you give up 100 miles of range, better performance, and more reliable fast charging and better GPS UI just to get a tax credit? These are the reasons I decided against the ID4 for my wife.
I don't make decisions for my wife (YMMV - Your Marriage May Vary) but she is seriously contemplating the Model Y vs ID.4 decision as her daily driver. She is concerned with the same variables you listed, and then some. In short, it's not about just the tax credit, it's a lot of factors and a lot of money at stake. As a family that doesn't cycle through cars every 3 years, we put in the time to research and test drive.
Range: it does not seem like a 100 mile range delta between Model Y and ID.4 based on real world testing (closer to 30 miles), but nonetheless, Model Y is slightly more efficient
Performance: Model Y has, objectively, *far* superior acceleration, but ID.4 has better (subjective) steering feel. Neither of us care about top speed
DCFC: Tesla has a more streamlined experience and larger network, but EA is expanding at a faster rate and charging fault frequency no longer a concern
GPS UI: Tesla sw is better overall, using the current versions of both cars' sw. No question about it. I don't trust promises of future OTA improvements from any manufacturer, so just basing on current state
A few additional features of the ID.4: massaging seats, power sunshade, free 3 years of DCFC (I value that at around $1k), $10k price savings, and adjustable passenger lumbar (we care about this since we actually travel together, I understand the solo travelers among us don't care)
A couple other features of the Model Y: charge port location is more convenient, frunk for the occasional need