I saw
this tweet earlier.
This is funny, but there's more context, and the guy missed the actual best part.
It's from when the Mercs go to the Administrator's building. We see statues of other mercenary teams having been under the Administrator, with the letters A-E representing them.

F is clearly missing, likely because they are considered bottom of the barrel due to their eccentricities. (Team
Fortress appears to be their designation, hence the title drops like
this, and
this).
In Issue #6, Team Fortress Classic Heavy had said
this, shortly before his death:
The other teams are all dead, with the TFC mercs having been said to kill them.
What this means:
Team Fortress has, in-canon, outlived all of the teams who look like generic Overwatch clones.
