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.
And it made me wonder whether in 18 years, when the gift recipient has grown up, bitcoin will be as popular or as relevant. It's a technology that might not age well in that amount of time--and I don't get the feeling that it's going to disappear or anything like that, but you wouldn't expect USB drives to disappear either. People expect long-term growth from bitcoin, but the truth of the matter is that none of us knows what's going to happen in crypto.
Having said that, I think it's a fantastic idea to put aside some satoshis or whatever amount of bitcoin would be appropriate for a newborn. It's a cool gift if nothing else.
Even if bitcoin were not as popular or relevant as now after 18 years. It would still be a good souvenir to give. A piece of the first cryptocurrency that actually attracted the attention of the whole world and was the best investment for the decade 2010-2020. Bitcoin already has a place in history.