Unfortunately they are starting to exploit the biggest “weakness” in science. That theories are valid only because they have yet to be disproven. And that theories will change if new evidence is introduced to the contrary.
They are now basically saying “well since you can’t prove it, there’s a chance” which is fundamentally correct at its base but it’s in extremely bad faith.
They’re now basically forcing people to prove a negative, which is impossible as a means of forcing their views.