I've also read about it, but I'm using the device indoors now and I don't notice anything. However, it is not a very bright display at maximum level. It is also difficult with any display in the blazing sun. Otherwise, the device convinces with the rest of its specifications. Price/performance is very good and I would buy the device again.
Yes, it will run Windows 11. When it is released, the end of 2021 or beginning of 2022 should be the case. Check in the BIOS whether the AMD fTPM is activated, and then there will be no problems with Windows 11.