Currently, the only way to mute players is to go into the menu and mute every single person in the game by disabling chat. I can’t mute just one player who has an open-mic or is intentionally being annoying.
Standard practice for MP games on PC is to hit tab, left or right click to activate your mouse so you can hover over a player you’d like to mute or report for abuse, send a friend invite, whatever… feature is just completely missing.