This is due to all the rare earth metals like lithium that has to be mined in other countries like Asia.
Where to begin…
Lithium is not a rare earth metal
Batteries contain no rare earth metals (Rare earths, which aren’t actually all that rare, are metals like niobium, dysprosium, samarium etc.)
Lithium is primarily produced in Australia, Chile or Argentina
Asia is not a country
LFP is certainly not ‘better in every aspect’. There are a different set of compromises to each cell type.
LFP have a more equivalent full charge cycles
NMC have more capacity (volumetric and gravimetric) (This negates some of the charge cycle advantage as the same mass of NMC batteries will experience less charge cycles for the same distance driven)
NMC have higher cell voltage
LFP have a less calendar aging sensitivity to SOC
LFP have a flatter discharge curve (but see below)
NMC is easier to measure SOC off, which leads to that LFP must be charged fully more often to calibrate the BMS (This may negate the calendar aging advantage of LFP as they will sit fully charged more often)
LFP uses a less volatile cathode so it has more resistance against runaway events.
LFP uses less scarce materials (This is likely the most clear advantage)
Blockade is being extended to Hydro Extrusions which supplies the Berlin Factory.
https://sverigesradio.se/artikel/if-metall-utokar-konflikten-mot-tesla-varslar-om-blockad
The cars power electronics will tend to have it’s peak efficiency at close to its maximum output. This is how most such power electronics work out.
Additionally if it is cold the battery must be heated to be charged whic reduces efficiency more the slower a charge gets, but this is mostly an issue in freezing temperatures so it might not apply.
Rest assured that any charge speed less than 0.2-0.1C will be neglible wear due to charging speed. Essentially any charging on AC will be slow charging for most cars.
Voting with your wallet is absolutely valid. Do not buy something you can’t live with yourself for buying.
I would point out that maybe this is your wife’s call though since it is going to be her car.