Valve issues DMCA takedown for "Team Fortress: Source 2"

Link: https://nitter.net/TeamFortressS2/status/1745157814295617767

Valve is generally supportive of mods (hell, a Portal 2 mod was just released a few days ago) but it seems like recreating Team Fortress 2 was pushing it... Really sad, honestly. I really hope Valve would just strike a deal with these devs and make it official rather than throw away the insane amount of effort they put into re-building TF2.