“Fifth, an educated consumer is the best customer, and rabbanim need to step up to the plate, and learn hilchos eruvin, prior to just following what others say.”
If this is your approach then we essentially aren’t arguing within the same religion. I’ve certainly met people who have become disenchanted and convinced that the rabbis don’t know enough and that they can posken for themselves, but it doesn’t end well.
I don’t know what we can tell you at this point; you seem frustrated with how the Orthodox world works. You could theoretically know more about eruvin than anyone else on Earth, but if you can’t bring any contemporary poskim who back up what you’re saying, nobody is going to agree to it. That’s just the way things work, and it would be catastrophic otherwise.