A copy-paste error. Also... someone read the article?!
You pretty much should do by the time you finish the GT Cafe Menu Books - which is the first pre-requisite.
Collector Level 39 I think requires a Car Collection value of 31,900,000cr and (although I'd need to sit and add up a worst-case scenario for the three-option tickets) you'll be not a huge distance away from that in car and cash value just by completing the GT Cafe Menu Books, and all the various tickets you'll collect along the way.
If I recall correctly, I was at CL37 when I completed the GT Cafe Menu back a couple of days after launch, with 90-odd reward cars (some from licences, I concede) plus whatever I'd bought and with a few million credits, without doing anything other than Menu Books and licences. That was without all the additional rewards now in the Extra Menus (again, I don't think you'll autocomplete any from GT Cafe Menu progress, but a couple look like they'd only need a low-value car or two in addition to your own rewards to complete them) and without the additional earning potential of Circuit Experience; it's not super complicated to pick up another 3.45m of cars from there - less so now.
Yeah, again, that's not massive. You've got seven days to do three (or fewer) races to finish that menu book. I recall a lot of people complaining that the races are too short in menu books.
In any case it may be all moot; I can't check - because the various test accounts aren't at the finale and my main account is way beyond the requirements so it's obviously accessible on that - but the game may well display the race under the special circumstance of it being a Weekly Challenge. We're only assuming it might not because of the Extra Menu thing.