Obelisk strikes back
We prepared for something like this by adding an extra feature to the SC1. We can do a soft-fork that slightly changes the PoW algorithm which would invalidate the bitmain ASICs, but allow the SC1 units to continue working.And yet the SIA devs don't see the irony in criticizing Bitmain (Bitmain's pool actually) for mining empty blocks and being a threat to the community, while they are implementing some sort of kill switch in their ASIC. Its almost like they knew this scenario would happen. What a bunch of scum bags.
They knew this was coming. I knew this was coming. People in the Obelisk thread guessed this would happen.
Devs can do what they want - they are called developers. Sia community can give them the middle finger and stick to Bitmain's fork or they can give Bitmain the finger and stick to Dev's fork.
I'm waiting for Sia Cash to appear on the exchanges now, and soon Litecoin cash, Dash cash....

That's not a question the "real" community and supporters of SIA ask. They are clearly stand behind SIA and team. And the same is true for Obelisk team.
On the contrary - the voices for a fork are loud in the community and not in the SIA team.
The question that comes up much more - are the buyers of antminers real members of the SIA community? Do you have to take them into consideration?
Or should bitmain continue to eat on the longtime work of others?
This is not the first time a possible fork has rocked the boat and it wont be the last. The possibility of a fork can be viewed with the benefit of hindsight vision when looking at the other notable forks: BTC/BCH, ETH/ETC, ZEC/ZCL.
In each case everybody is going to claim the other side is a fringe and not part of the "community". Are people who buy pantloads of A3 miners to secure their vision part of the Sia community? Well they are mining the algo and supporting it, but they're unlikely to be adding to the development of the coin. Can you see Jihan talking with the Sia devs... probably not.
I think you can already see both sides with users venting in the last 30 posts:
SIDE A) Bitmain is screwing over the Sia community and those who supported the Sia devs by making miners for their own personal greed.
SIDE B) Sia devs are being childish and centralizing Sia by offering a fork that the penalized buyers of A3s who wanted to secure the SIA network.
I wish I could sell popcorn on the forums

The big difference in the examples you mention and this case is that in those cases they are still using the same algorithms, and the forks occurred due to major differences in the vision of the future. The SIA developers get paid by taking a cut of every transaction. Unless Sia is run by the Corleone family, a hardware developer who makes a device to hash an algorithm shouldn't need to get the developer's blessing. Someone who mines the coin shouldn't have to be active in the community.