https://www.scientificamerican.com/article/howcan-a-poll-of-only-100/
The tl;dr version is: if "cases" weren't dependent on self selection, determination & reporting (of people feeling ill), but rather were a completely random sampling of individuals selected across the country, within regions, within demographic groups, etc, then it *could* be considered a valid statistical reference for those particular queries.
But it's not; imagine a political polling operation that questioned everyone going to a series of Trump rallies. Each day, as they continued to ask people who they were voting fore, the tally number of course would keep rising. Would the proglibs become alarmed? (By this process, not for other obvious reasons.) Why? The questions are being asked of self identified Trump supporters. Duh.
IOW, it isn't an accurate measure of the entire electorate. So too CV cases - the absolute number of 'respondents' is being tallied by different organizations to produce some kind of ratio to infected, resolved, fatal, etc. that fits their particular designed narrative.
I get why they're doing it - they're the self ID'd enemy; it's what they're supposed to do. But to have an ostensibly conservative web site continue to allow this completely - embarrassingly - process error post after post, day after day, really begins to raise questions.
Wow. You are wound up pretty tight.
Wait...I think someone is peeking in your window.