Isn't website hosting already decentralized? I can host my site on one of the many different providers out there, I can host my own, or even deploy to multiple providers. Users can access my site without extra steps.

Why would I want to host my site on Nostr? What does it do better than the competition?

As a side note, your demo isn't viewable without the extension. Trusting a new browser extension has a high level of friction. It would be nice if your site gave some hint of why a user might want to jump through those hoops.

Nice observations

1- Hosting site on one of the service providers doesn't mean centralization, ex. these week amazon outage, if you are going to deploy to multi-providers it will costs much, in our solution we offer you freedom of hosting on whatever relays you prefer many relays are public which means 0$ cost, moreover you able to expand your deployment on more relays as you want.

2- You are definitely correct, We have just highlighted a small note in the landing page that end users need extension to access the website, to gain some trust we have published the extension to chrome and Firefox store so a code review is applied to ensure security.

Really appreciate your feedback we can add more informative details in the landing page to show why end user need an extension, also we are planning to build a gateway so end user doesn't need to install extension in order to to access nostr websites "Frankly speaking we don't prefer this way in favor of decentralization and it is planned just for demonstration purposes"

Isn't that the same as putting your website on many different public, free website hosts? Which don't really exist, for good reason.

It would be similar (except for discovery via pubkey), but as you said, there aren’t really that many free web hosts. So this is providing something unique.

They'll quickly stop providing it when someone uploads 100TB of illegal content.

They will just implement anti-spam/anti-CSAM measures as public relays do, or they will gate access based on web of trust or Lightning micropayments. Pretty much how Nostr works at present.