Well for many the reason is we don't really care. All most miners care about are the following:
- does the manufacturer deliver ( on time )
- does the miner do what the specs say it does
- is the power to hash to dollar ratio a good one

Reason many dont get motivated about proposals is because these forums are full of scam artists, big talking wannabe manufacturers who may never ever produce a working machine from their 3D rendered dream machines. The most popular method now is, you produce the miner to a working sellable batch one level, send one or two to the various testers on these forums, they do an assessment of those three things, they post about it, and then, well speaking for myself, I will start to care.