The Source modder community has always been a bit apocalyptic, but still its community leaders generally kept things going. Jed has been one of the most selfless and important mod tool developers out there since 2002: his updated Half-Life 1 model viewer with alpha texture support, his collaboration with Nem on VTFEdit / VTFLib, his early work on 3DS Max plugins, and the VTF Thumbnails plugins... all his tools were utterly indispensable.
On April 8th, he announced his "retirement" from the mod community, citing real-life stuff / general disenchantment with modding / the stagnation of his own Source mod, Ham & Jam.
I won't chastise Valve. Given what we now know from their employee handbook, you'd do the same too: you'd work on Half-Life 3 or Portal 5 or something new entirely, with all of your friends, instead of fixing an outdated SDK for an old engine branch that a handful of ungrateful fans use. Would you rather do fulfilling work or thankless work?
Anyway. Thanks for everything, Jed.