The release of Overwatch 2 could not have come fast enough for Mei. Her damage was admittedly below what other DPS heroes are capable of. With two other tanks, her self-tanking and help up front became redundant. Now that games are more like deathmatches and tanking is at a premium, Mei is gaining steam.
Overwatch 2: Tracer Guide (Tips, Abilities, and More)
So much so that she's become an early target of the ire of the Overwatch 2 community that fights against her. This is the style of game that Mei was designed for. Veterans that didn't previously use her are scrambling to figure out Mei's skill set with the help of some expert advice.
As previously stated, though Mei is listed as a damage dealer, she's equal parts utility and tanking. She can go immune and immobilized for a few seconds on a relatively low cooldown. During this time, she heals rapidly. This gives the ability to survive in situations that would kill most other heroes on the front line.
Mei's other talent is utility. This isn't a support role so much since this move doesn't heal anybody. But she can cut off escape routes or block off a line of sight versus snipers. Placed in the middle of a team, she can cut off the tanks from their healers and deal a critical blow. By the first season's end, she'll this playstyle will have her ranked as one of the best DPS heroes in the game.
Overwatch 2: Baptiste Guide (Tips, Abilities, And More)
Mei is a great hero to use while unlocking all of the other heroes. Her standard shooting eliminates is perfect for close-range targets and her secondary fire is a long-range shot with no drop-off with the potential of a fatality with a headshot.
The difference between the pros and the amateurs is how well they use the Ice Wall.
Read more on gamerant.com