I'd say it's a lukewarm take at best. A million dollar company is something like a small (<10 people) consulting agency or a couple hot dog stands in a relatively busy area. So like you said, nothing exceptional.

Leaving out self-employed individuals and 2-3 person hair salons and the like, a million dollar revenue is not really something difficult to reach. Especially if you include things like retail, where moving any inventory increases revenue a lot. Even for companies outside retail, when keeping in mind how much one is able to bill for things like trades in the US, revenue increases quite quickly.

Never mind that surely a big company doesn't explode the second someone calls in sick. The whole sign makes no sense at all.