As a developer of a FOSS Lemmy client myself, this poll is really Inter (considering it's biased towards the "upvote" makes its negative score even more significant). I suspected it, seeing the low adoption of my app (which I blamed solely on myself thinking "it's a poorly made app"), but this is the confirmation.
People don't care whether their software is proprietary or not, even people on Lemmy who should be more sensitive to the topic. People don't care if they are tracked, displayed ads or have to pay for what should be a basic supply (like clean water or clean air). People want something which is "fancy" and make them feel like they "own" it and that ownership is linked to their status and ultimately to their ego.
I didn't want to get political but I'm a Lemmy user too so I kind of have to jump to the consequence: this must be another effect of the brainwashing of western capitalism. Plus my app sucks π