The Valve Index and Half-Life: Alyx were huge accomplishments that did more for VR as a medium than anything before (and probably after) it. Also Valve's efforts towards making Linux a gaming platform were immensely successful. Proton is amazing and most people that use it agree.

Valve is not investing their resources in stuff you care about, but they are not objectively wasting their time. They are not just building another online game (which everyone is doing), but innovating in and developing areas that no one else can get away with wasting money on.

I am thankful for all the things you list, some of which have not turned out great, but that is imho just a sign that they are truly doing bold/economically dangerous things, for the good of the medium.