The younger crowd loves the tech of F1. That is where the sport will thrive.No. NASCAR pulls in something between a 1.5 and a 2.5 every week, leaving out the Daytona 500 which can pull in about a 4.5. Remember this is in "sports prime time", either actual prime time on a Saturday night or on Sunday afternoon.
F1 pulls in between 0.6 and 1.1. Remember that much of this is on Sunday mornings, against preachers, news talking heads, and infomercials.
While NASCAR is in a major decline, and one from which it may not survive (NASCAR has to make pretty much all its money in the USA, F1 is a European sport and what they make in the USA is really gravy) it is still way ahead of F1 in this country.
F1 has ebbed and flowed in the USA for as long as I can remember. It is currently about as good as it ever has been, but this is still niche sport level. Eventually the management does something to screw it up and it recedes.
I'd rather watch F1, I think it's a more exciting product.