As bad as Horton's is i will say A&W has made the worst cup of coffee I've ever had. I tried the dollar coffee at three different A&W's this week, and all three cups were absolutely disgusting. Which surprised me, since they do have the best fast food breakfasts out there.
Wendy's coffee is pretty awful as well. Tim's won't have to worry about losing caffeine addicts to A&W or Wendy's sadly.
You can get $1 coffee at Ikea and it ain't awful. Same with A&W - but that was pre-pandemic.