A writer in Atlanta really liked Snell, at least during his hot streak:
"If there is one Hawk who has best exemplified the style of basketball that the team has played to string together their best winning streak in years, it might be Snell. Interim Head Coach Nate McMillan urges his players to pass the ball from one side of the court to the other. Snell does that. He wants defenders doing everything that they can to stay in front of their assignments to prevent penetration and the subsequent defensive rotations. Snell does that, too.
Additionally, late in games, McMillan wants his players to remain "calm, clear, and connected". And, boy oh boy, does Snell ever do that. At one point, McMillan said that younger players occasionally have a tendency to get "emotionally drunk" in big moments late in games. Without honing in on the precise definition of that phrase, it is easy to identify that Snell is the 180-degree opposite, and he has demonstrated his poise time and again during the winning streak.
In addition to being a trusted perimeter defender in a newly fierce late-game defense, Snell has hit pivotal shots in each of the three close games during the streak. After Houston came back from a 23-point deficit to tie the game in the fourth quarter, Snell hit a pair of threes late to give the Hawks some breathing room. Against Toronto, it was the game-winning three at the buzzer. In a stirring comeback over Orlando, he hit a pair of threes late that prompted high praise from Trae. "
https://www.nba.com/hawks/features/tony-snell-not-emotionally-drunk