97TDISTU, please leave the overreacting to US (the moderators). You might discover that we DON'T.
Contrary to the occasional police officer or other government official that I have had to deal with, the moderators of this site are actually capable of using common sense.
Given that this section of these forums is dedicated to alternative fuels, it is not the intent of this rule to render this whole forum section useless and redundant, which is what your overreaction would do!
We (moderators) have enough common sense to see the difference between someone who is genuinely using fuels that this forum section was meant to discuss (primarily biofuels of various types), and someone who is being a cheapskate by using surplus jet fuel, home heating oil, off-road diesel fuel, etc.
As others have noted above and elsewhere, it IS QUITE POSSIBLE for an independent private citizen to pay the road taxes on alternative fuels. And no, I am not going to bother asking for proof that you have done so. I am not the tax auditor. Of course, anyone who doesn't pay such taxes, and has a problem with the taxman as a result, is on their own.
Got it?
The rationale for this particular situation differs from the rationale of most of the other things on the banned subject list (products of snake oil salesmen and other scammers) but the rules are what they are.