No Love For Linux in Mozilla's upcoming Web Apps marketplace

Have you even read through the discussion on the bug? They are actively working on getting in Linux support. They may have prioritized Win & Mac for several reasons, but that's just market realities, not "no love" (I say this as a 10+ years Linux desktop user).

When it comes to defining where their priorities need to be, the word "marketplace" says it all.

In order to ensure that app developers get the best chance they can have at being successful, the most lucrative demographics simply have to be prioritized, even at the expense of the least lucrative ones. Doing otherwise would send a signal to app developers that their interests are not being taken to heart, which would in turn discourage them from developing for the platform, which would in turn mean it's more likely to flop.