From Netflix side there's confirmation that S20 FE is HDR compatible but the delay is from Samsung. It's been more than a year Samsung team please give us that HDR update atleast in the next security patch update. This is the least you can do. We all...
If the charger is PD compatible the of course you can charge it using (the wattage is capped at 25w even then) that but make sure that it's from a good provider preferably OEM's