I found this quote from the article to be particularly interesting:
If, for example, someone received today a floppy disk or a Sony minidisk from the 90s, it would be very hard to find a device able to read it now. It is likely that the same problem will happen with USB sticks, so using a hardware wallet from 2019 may end up requiring multiple adapters to bridge between different communication standards.
I too am terrified of the media for storing information, I have always had it: in the world of information technology there are many things that have been lost due to the means of conservation/storage rather than the format.
I always want to make a comparison with the writings on papyrus of 2000 years ago still preserved compared to CDs that lose their storage capacity well before than 100 years.
So I am afraid that many bitcoins will not be equally accessible in many years due to computer obsolescence.
Maybe the good old plasticizer paper wallet reduces this risk? But it certainly does not cancel it.