> Why not just get this info from the HTTP server?

This is explained in the blog post:

> There's always the option of just parsing server logs, which gives a rough indication of the kinds of traffic accessing the server. Unfortunately all server traffic is generally seen as equal. Technically bots "should" have a user-agent that identifies them as a bot, but few identify that since they're trying to scrape information as a "person" using a browser. In essence, just using server logs for analytics gives a skewed perspective to traffic since a lot of it are search-engine crawlers and scrapers (and now GPT-based parsers).