Leaving aside the "idiot" attribution, the initial problem is defining
what it is that the skeptics would claim they were right about.
Merely applying for a $1,000,000 prize is not evidence of anything much,
other than, possibly, a lack of wealth. At best it's a triumph of hope
over experience.
If you indicate up front that receipt of the prize is conditional on the
supply of winning lotto numbers, then I expect fewer people would apply,
but if the application is free, then the rational person who places no
value on their time, and has no marginal cost for internet data, would
still apply, despite knowing that their chances are slim indeed.
By the way, you would be somewhat exposed to the risk that someone does
supply the winning numbers, thereby requiring you to pay the prize
despite not having won it yourself (I assume you won't be buying tickets
for all the submitted numbers).
The ACCC (being Australia's consumer protection agency) might come after
you regarding misleading and deceptive conduct, though probably not,
because you're not policitically interesting, which seems, for some
reason, to be a consideration.
If you charged a fee to process the application, and people still
applied (paying the fee), I think skeptics would regard that as
sufficient evidence that a fool and his money are soon parted. However,
that's not much in doubt anyway.
So what exactly would the skeptics be claiming vindication for?
Sylvia.