Did you ever get your own water tested to see where it lands on the fluoride scale? I used to roll my eyes at the whole thing too, figured it was just people freaking out over nothing since my tap water growing up was pretty low in it. Then I moved to a spot outside Boise where the well water has around 1.5 mg/L naturally and my dentist actually commented on how strong my enamel was at my last checkup, which never happened before. Not saying it's some magic cure but it definitely made me stop brushing off the whole debate.

Heard Omaha runs $1,600 to $2,200 for that swap.

If the smart readout on that Dell is showing "unknown" or giving you a weird capacity number, that's usually the chip inside the knockoff not talking to the BIOS right. I ran into that on a 2018 Latitude, the meter said 11.4V and full charge but Windows kept nagging about a non-genuine battery. It still ran fine for like 8 months then started dropping to 60 percent and shutting off with no warning. For a customer machine I'd have made them sign off on it, because when that thing dies early guess who gets blamed lol.