While i can’t speak for the foundation it seems they have a clear stance based on not changing any of the core values. As long as their are more than enough other funding options, many of these unexplored and undiscussed because it seems for the ECC, big stake holders. VC’s the mandatory Miner fee seems to be the easiest one.
There is no sign the foundation is against alternative sources of funding, actually several sources of funding would benefit the whole Zcash eco system to be way more healthier, more de-centralized and with less options to be hold ransom by a specific group. There are several other proposals around that either have some kind of additional source funding or suggest to add additionally source funding and exploring such.
The real incentive for an Asic miner here actually is a bigger one than compared to a GPU miner. Either you support and donate or long or short you have nothing to mine at a profit or to mine at all which should be even less of an incentive to loss a source of income.