Fast Charging Vs. Slow Charging:

My feeling is that whether Fast Charging damages the battery depends on many factors, battery chemistry, efficiency of cooling, ambient temperature, battery temperature at initiation of fast charging, frequency of fast charging etc.

Some cars will precondition the battery if the navigation is used to take you to a DC charger, either cooling the battery if it's hot or warming it if it's cold.

LFP chemistry is a far better chemistry for hot climates like Thailand, it has more than double the charge cycles is less likely to a thermal runaway event and whilst it performs poorly in cold climates, it excels in warm climates.

Fast Charging produces more heat, so the battery cooling system becomes important, it's why Chevy & Nissan are the worst performers for battery longevity, I don't know of any other manufacturer with their problems.

I had a car with NMC battery technology, I kept it for 2 years and sold it recently because the MG4 I bought to keep the miles of my more expensive NMC car turned out to be a lot more fun and consequently I was using it most of the time.   Other factors in disposing of my NMC car were that I have an MG Cyberster on order for next year, the NMC technology worried me, it needed new tyres (100k), it's first service (30k), insurance was up for renewal (120k) and warranty was expiring and the manufacturer has a reputation for ruinous repair costs.   I was fortunate that I sold it whilst new models have a 12-18 month waiting list and I got about 90% back of what I paid.

If the MG Cyberster is not LFP technology then I will have to think hard about whether I want it as it may well be my last car.  I am tempted with the Seal 3.8s and the MG4 X Power if it comes to Thailand and has LFP batteries.  The Seal will be LFP because that is what their blade technology is.  Incidentally, BYD never originally stood for Build Your Dreams, the founder registered it as a name because 3 letters was easy to register, when they decided to get into EV's they tried to come up with words to match the acronym, it hasn't gone down well with customers and they are removing that slogan in most markets.

There is one car I won't ever buy and that is a Tesla.  They have given the biggest FU to all of their previous customers by massive discounting.  Every time they discount outside Thailand IMHO it brings the day nearer to them doing it here.  I have "Zero" trust in Tesla.  They have practically no corporate governance and everything is done on the whim of one man, it bodes ill for the future.