I think both the Summit Charcoal and the SmokeFire are products that were launched solely to get into markets they weren't currently in.... Kamados and Pellet Grills, respectively. The problem to me is that Weber REACTED to both platforms in a way that is completely against the ways Weber has always made themselves great. Weber has always been an innovator. These two grills, in my opinion, were clear boardroom decisions to get into hot markets that competitors were already dominating. It's part of the reason why these two grills never really appealed to typical Weber customers, again in my opinion.
When Weber wanted to directly attack the BGE/Kamado platform, their winner would be what they just finally released now in the Master Touch Premium with the coal chamber, diffuser plate, hinged lid, etc. It combines the innovation and classic greatness of the Kettle that Weber personifies combined with the extra features and versatility to compete directly in the Kamado market while also kicking their ass in price. Plus, it still absolutely appeals to your long-time Weber customers. Win-Win-Win.
Instead of the SmokeFire, my opinion is that Weber should have designed and built a gravity fed charcoal kettle. It would combine the long treasured format of cooking with charcoal with the performance/design of a pellet grill. It would compete in the pellet grill segment, but be innovative because it's not using the "gimmicky" pellets as fuel and would be very easy to market against the big players in the pellet segment. Plus, you'd once again appeal to Weber purists because it's still a charcoal grill.
In both cases you keep the signature porcelain enameled Weber kettle look and durability. You stay true to your roots as a charcoal grill/smoker maker and it is still your cornerstone. You retain your ability as a company and for your customers/fans to counter any format of grill/smoker with "Weber is the best, has always been the best, and they even do your job better than you do."
Again, just the opinion of some dude on the internet. But, yeah, I can see this being an intentional move to the Master Touch Premium and quietly phase out the Summit Charcoal.