Property owners absolutely are entitled to stop efforts around them to increase housing supply or density, and I say this as someone who also has done similar work to you.
If a community wants to remain SFH-only, that is their right, even if other people who can't afford to live there or would just like to see higher density would really like them to change their mind.
If a community wants to remain SFH-only, that is their right, even if other people who can't afford to live there or would just like to see higher density would really like them to change their mind.