The “you mad bro” is found among internal Valve communication (Valve COO Scott Lynch to Erik Johnson and Newell, i.e. in the sense Johnson/Newell being “mad”, not Sweeney). It was particularly not sent out as a response to Sweeney. Another outlet already got tripped over this and had to make a correction: https://www.gamingonlinux.com/2024/03/valve-coo-on-epics-tim-sweeney-you-mad-bro-when-launching-the-epic-store/
This is not quite as sensational as some people are framing it.
The “you mad bro” is found among internal Valve communication (Valve COO Scott Lynch to Erik Johnson and Newell, i.e. in the sense Johnson/Newell being “mad”, not Sweeney). It was particularly not sent out as a response to Sweeney. Another outlet already got tripped over this and had to make a correction: https://www.gamingonlinux.com/2024/03/valve-coo-on-epics-tim-sweeney-you-mad-bro-when-launching-the-epic-store/
This is not quite as sensational as some people are framing it.