As DeBauer said, he still recommends it. The point is that we shouldn't encourage misleading advertising. If you are going to promote something, it has to be within reasonable conditions and could be reproduced, otherwise why not just advertise liquid nitrogen boost clocks? or a number that works at least thru Post?
PS. Your argument on the car defeats your purpose, as you stated they provided a condition ("8000RPM" and it probably shows a standardized ISO testing scenario which controls for temperature and pressure). If AMD wants to say "Max boost clock of X Ghz with X470 and liquid cooling" then sure, it has a reasonable stated condition, but they didn't...
Except in this case the one advertising MOAR BIG NUMBAS! is.... AMD.
Ignoring anything you don't agree with by claiming they are an intel fanboy just shows that you are an AMD fanboy....
Although not perfect, it can't just be ignored. Before this it was isolated to specific reviewers seeing things that didn't make sense but it could easily just be their samples. Now you have evidence of thousands of people, with different equipment, of which half or more are unable to reach the boost clock. This shows that more work needs to be done but there is strong indication of an issue here (though in the view of many, a minor one at that).
I don't understand what you argue about the boost clock as part of my definition making anything illegal. As far as I know, Intel for the most part can reach the boost clock on a single core and AMD could easily as well. If they had set the advertised max boost clock maybe 100mhz less, they would have reached it. Do they need to reach 100%? no, I think statistically that is impossible, but I think ~90% of customers is a reasonable number (a little less than 2 sigma).