The cost of the 100 year domain name registration is $38,000 USD.

“Whether it’s giving a newborn the special gift of a domain and lifetime home on the web [...] I hope this plan gets people and other companies thinking about building for the long term.”

This is insanely expensive for a newborn. Invest that in their college fund!

How many companies have been around for longer than 100 years? How many tech companies have been around for more than 100 years? I've read their examples of who this is for but I don't think there are many use cases for this.

The cost of the 100 year domain name registration is $38,000 USD.

A bad price for hosting today (even if you pay monthly, I would expect a very hefty bulk purchase and prepayment discount), but you are paying for services to be done in 2120 with 2023 prices. Having said that, it is probably better to invest the 38k into a government bond or index fund, since hosting costs are not likely to outpace inflation.

Also, you are betting on the fact that the World Wide Web is going to remain a viable technology for the next 100 years and that WordPress will remain a functioning and secure website framework. Also, is there any guarantee that the company will not shut down after 30 years or that the machine you are being hosted on will be kept up to date with hardware standards (ultra high definition 3D movies take up a lot of storage space and bandwidth).

Overall, this feels like either a publicity stunt or an offer in search of a sucker.