I agree. If it was me, I'd accept the $80/day happily. No point in being difficult (yes, I know it's the other guys fault) where it really doesn't matter in the grand scheme of things. Where I'd be adamant is 1st: Tesla certified shop and rates and 2nd: diminished value.
True, diminished value will be a big one. $10 dollar a day or so difference on the loss of use, even with 2-3 months it's only a few hundred bucks.
Since my A-pillar bottom (mild steel) is bent and the catalog does offer replacement panel sections, I won't accept bending it back (told shop to send me the estimate before starting any repair, will go to my insurance and have them go after other driver if needed).
Same for other parts, no metal will retain their original strength after bent and then bent back, and the whole point of repair is to restore to original condition, and replacement parts will be the closest to that.
You want to fix it, then fix it right. Right?