No, Taco Bell won because WHO THE FUCK IS TACO JOHN'S AND WHY THE FUCK DO THEY OWN TACO TUESDAY?
Did you know that two companies had ownership of that trademark? Does anyone associate "Taco Tuesday" with anything but being alliterative? Do people immediately think of Taco John's or Gregory's when they hear "Taco Tuesday?"
No.
They probably think of every elementary school that had a Taco Tuesday at least once a month. They probably think of the Lego Movie. They probably think they're hilarious and just made it up for the first time.
Even if you knew of Taco John's and knew they had Taco Tuesday, did you know that it was their trademark?
Taco John's did not relinquish the mark because they couldn't fight it. They relinquished it for the same reason Gregory's did... they knew their claim to the mark was MINIMAL at best and it would be trivial to show common usage of the term that would render it generic.
I trust Forbes to be correct about this about as much as I trust Forbes to be correct about anything.
They're a trash rag that exists solely to fellate capitalist shitbags.
Fuck 'em.