I would submit that your assertion that no one can use Safari in Lion is a misnomer. I have been using it just fine since my upgrade to Lion last night. I am going to have to figure out how to selectively turn off Resume for Safari, but other then that, I have had no issues with Safari 5.1.
Any sort of discussion group on the Internet is going to be rife with the complainers, luddites, and those who did not read before taking the upgrade. To be certain, there will be those with genuine problems or questions about how to do something. But, to use this data to assume that no one can use Safari is gross hyperbole and a mis-statement of the issue.
Now, to be sure, Apple will have to look at the data coming in from users who have upgraded to Lion or Safari 5.1 on Snow Leopard and if the see some issues there, I am sure they will address them as soon as they can.
To that end, I would encourage any one with real issues to submit that to Apple Support as well as submit their feedback directly to Apple via the established feedback system.