Yeah, it's hard to argue with people who believe this and while the burden of proof is on them, it's a pain.
Arguing with people who are divorced from reality to the point where they make implausible claims and refuse the burden of proof for those claims isn't hard; it is impossible.
And impossible tasks are the easiest to complete - When a task is impossible, the best outcome possible is failure; and if zero effort results in the optimum outcome, the task cannot get any easier.
Any pain is the result of your futile attempt to achieve the impossible; and can be removed by a simple cessation of effort on your part.
The maximum response required for this claim is 'Yeah, whatever.
'