The message I got wasn't related to the number of addresses affected (though I've been using this approach for a couple decades), but IIRC regarded whether the datasets in question were free.
The guidelines don’t completely rule out politics, and in this case the topic is of interest here since it dovetails with other political issues of long-running concern in the HN community: who owns devices with outside service dependencies, right to repair, etc. The question of whether someone who physically controls an ECM pod can configure it feels a lot like the question about whether John Deere can prevent a farmer from configuring their tractor’s software or an IoT vendor can shut down a service without providing an alternative.
One area where this is especially of interest is everyone considering their dependency on U.S. products. If you live in a country under military threat, questions like what happens if the first strike against Canada involved a malicious Chrome or Windows update or holding back a patch for a vulnerability the NSA wants to exploit is quite an interesting problem.
Given how pervasive politization has become this would suggest that strict adherence to any "politics is off-topic" rule would necessarily involve making the site permanently read-only.
The guidelines seem just vague enough to allow for suppression of topics that the oligarchs are touchy about while appearing reasonable. Tech is inherently political.
I’m not sure I would bet on the web itself still existing in 100 years. That being said, I think the biggest risk here is your hosting company going out of business, or changing their products such that they won’t host your site anymore.
If you’re OK with your website having a big ugly URL (which might not be a problem if you use a QR code to point to it anyway) then hosting a static website on AWS S3 might be your best bet. There’s so much money flowing into AWS right now, I imagine there will be enough interest to keep it going for several decades to come.
EDITED TO ADD As far as i know you can prepay your AWS bills, so you could prepay a massive amount and hope it outruns future price inflation
If he's hosting just some textfiles (i.e. a few KB), he won't have any aws bills that he would need to worry about prepaying. (I have a static s3 website, low traffic and low storage size, and i have not paid anything on it for years).
At least that's the case today, but the policy may change tomorrow. It's not easy to guarantee anything 10 years from now, let alone 100 years.
Edit: others are pointing out that it’s only free for domains with fewer than 10 pwned addresses. I have 8.