Reading some 2019-20 articles seems to be a little dated now as technology continues to improve but still relevant. Some of those articles you quoted from 2019 were quite good and it appears LFP are better for maintaining life cycles as they handle the charge /discharge cycle better. China's CATL & BYD prefer using the LFP battery and all Tesla Shanghai cars use CATL supplied LFP batteries. I can see why Tesla is preferring to use 811 in the US as the batteries can hold a slightly higher voltage meaning less batteries per KW/h so less weight. Remember Elon is using S3XY as his marketing ploy and the Model S Plaid is an absolute weapon in a drag race. The Plaid uses 18650 cells(NCM811) to dissipate the rapid heat cycle.

This one from last year seems pretty relevant at this point.

https://lghomebatteryblog.eu/en/this-is-why-ncm-is-the-preferable-cathode-material-for-li-ion-batteries/

From this article,
"If you look at the paper published by the scholars from Argonne National Laboratory found in 20155), to produce 28kWh EV Battery, LFP battery requires 100 cells while NCM requires only 96 cells. As a consequence, a LFP battery requires a higher quantity of battery cells to produce the same capacity of EV battery compared to a NCM battery, resulting in more waste at the end of its life."