>>718898878
Deadlock isn't sufficiently different than DOTA or LoL so it suffers from nearly 20 years of meta development. You either need to be able to aim out of your mind or already have a good grasp of MOBA fundamentals to play it competently.
In other words, it will run into the same issues every post LoL or DOTA 2 MOBA had to face. The players got too good and many are still glued to their 5,000 hour games, which at a strategic standpoint are just better games anyway. Deadlock appeals to a subniche of MOBA players that want 3D action at the expense of strategic depth, while still requiring the same level of investment to play decently.
tl;dr: The game itself is by nature "hardcore" but at the same time is an objectively worse in gameplay variety than its inspiration. The 3D deathmatch aspect is fun, the strategic plays are 5/10.