I guess a lot of people dont have internet and most of them, surely, dont know or even heard about bitcoin. But the people who have known and investing in the bitcoin are surely felling from it.
What they are feeling right now is not fever because of the increase in price, but are not worried because the price seems very unstable and we have been stalled in the $10K-$11K range.

There is no single person on earth who haven't heard of bitcoin.
Everyone is talking about it, it's all over the news, everyone is buying it, price is dramatically increasing.
It's like gold rush back in 1848.
So why aren't we calling this bitcoin rush?
You know, in 20 years from now it would be funny to say - yeah, i bought/mined bitcoin during bitcoin rush back in 2017

I have to disagree. For me, its a small percentage that people know bitcoin globally. Only its already a brand name, those who don't have access to internet or mobile phones doesn't know bitcoin or crypto for sure. We can call it a rush if you go out on the street and can talk to someone about bitcoin. In my place, I haven't seen or heard anyone asking me about bitcoin.