I think this game is liked more in the MOBA communities rather than FPS (TF2) because it just has so much shit to learn on first look and this disways people from actually picking it even if it does have the potential of movement outplay. It used to be FPS games were less complicated but deep mechanically and MOBAs are more complicated with hero countering item management and tactics. Smite/Overwatch/Valorant and now Deadlock are prime examples of this "new" FPSMOBA genre that has recently poped up to try and rake in both of these playerbases and give everyone something they might enjoy.
Unfortunately for Deadlock they tried to make the game as complicated as humanly possible with all the items and builds making it lean more into MOBA rather than FPS or TPS, like it genuinely took me an hour to go through all the items and it still hasn't clicked for me, I'm on the FPS side of things and I've always disliked MOBA ability type games like Overwatch because it felt unskilled and mechanically unimpressive and all of the different visual clutter, Deadlock has a lot of potential because I still like watching it but playing it feels less like playing a game and more like doing my taxes on shrooms.
It has been getting more popular recently which is always nice for games that take genuine skill to move your character (unlike Overwatch) but I don't think this game will ever hit the same as TF2 to me. Maybe its because I'm getting older and new games all just look like FOMO garbage that focuses more on microtransactions and making their characters gay/ethnic or both than the actual gameplay. For the time Deadlock is going in the right direction at least from an outsider perspective.