And when you consider them as a manifestation of mental illness and jumping to conclusions, it exists again!
A paradox is a logical contradiction. That is what motivated the question of Fermi "They should be here, where are they ?".
The right answer to this question must remove the logical contradiction, and this is what we are interrested in. The answer that the ETs are visiting earth and reported through ufological sighting would be a valid one, but it is systematically ignored or discarded when considering the Fermi paradox.
That is, in my opinion, the only paradox.
PS regarding the downvote, Hackenews is not Facebook with its like button. On Hackernews, downvotes are for people who don't respect the rules.
When you consider UFOs as a manifestation of ET civilization, the Fermi paradox does not exist.