More likely is nobody at Valve cares enough to actually monitor or respond. There's plenty here about their bizarre corporate structure which really falls flat at critical times.
This behavior was seen before too with the devs behind the new Gmod in Source 2 (Alyx engine). They spent months trying to get in touch with access and it came down to an employee who ended up getting fired for neglecting responsibilities. Now everything seems to be working out and open tooling is being developed.