That’s a good call and I agree on most of what the author said.
However, suspension and hibernation is an issue with every FDE system out there.
The only real solution I now with FDE is to not use suspension and always fully power of your device or buy a CPU and motherboard that support encrypted RAM and buy encrypted RAM. But this is not a decision everyone can make, since encrypted RAM was always expensive as hell and nowadays, it is even more expensive.