And why it that others can't see it?
Some do.
The purely technical argument I've repeated several times now, that full nodes have no *power* in the decision-making process, still stands unchallenged, and several people understand it too. Hell, Satoshi and Gavin are part of those people too, even though I don't have to appeal to authority, but just to show you that "others can see it too". They have an informational role, they can be used in the "psychological game of FUD and FOMO concerning miners forking or not forking", they can give assurance to their owner, they can help with the internet connection, they can help with the privacy of transactions, and they can keep a copy of the block chain if all miner pools get bombed. I'm not saying they are useless. But they have no *power*. As such, they don't play a role in "decentralization" which is a notion of *power* (as contrasted with distributivity which is a technical notion of geographical and hardware spread of a function).
This is why a UASF is a ridiculous notion, apart from the psychological encouragement for miners that suffer from FUD to fork. And this is also why, apart from their utility for their owner, the number of non mining nodes in the power structure of bitcoin is of no importance, which changes entirely the balance of arguments if this is taken into account.
It is not the first time that I encounter religiously convinced people that lost their ability to think rationally, open minded about a technical/game theoretical issue without clinging to dogmatic truths they accept on authority, but look at the reasoning for its sole value of logical validity.
What is dramatic in this debate, is that a false argument is used, of which not many people are ready to analyse in depth, critically, its validity, and that, based upon this false argument, certain options are considered erroneously "bad" from the start. I gave the analogy before: if you're convinced that plastic guns are necessary to stop an invasion of the Russians, and if this "known truth" is not put into question critically, then you will end up setting up a whole wrong defensive strategy. If it would turn out that you need to diminish the number of plastic guns to make enough tanks and fighter planes, you may erroneously call people who are in favour of making more tanks and fighter planes "shills of the Russians" because they would diminish the amount of plastic guns, and "everybody knows these are essential to stop the Russians".