Why do websites today refuse to work on EDGE/2G, even though they used to just load more slowly? [closed]

I remember that back then (2017–2020), most websites loaded just fine, whether on 3G or EDGE — the only difference was the speed. As of today, even the search engine lite.duckduckgo.com/lite/ (in Google Chrome) barely works when searching on H+ and 3G mobile networks — not to mention EDGE. When I try to open a website on EDGE, the browser displays the message: DNS_PROBE_STARTED.

Please tell me what has changed since then, and what factors are influencing this behavior today? Surely the website doesn’t care about internet speed — TCP should simply transmit data more slowly rather than rejecting the request entirely.