Because the idea simultaneously explains Fermi paradox: every civilisation destroys the whole visible universe, by creating a new universe, so we are the fist and last one.
It explains Fermi paradox, as well as fine-tuning of our universe for the black -holes AND for the civilization appearing.
However, there are still many holes in the idea, as some civilisations may not build LHC, and also fecund theory suggests that many new universes appear from the first one, but in the case of false vacuum decay caused by LHC it is the only one new universe and with different properties. And if there are many blackholes from LHC, they will not destroy the universe and even Earth.
Maybe micro black holes may do its bad job slowly, like for 40 years it will sit in the center of earth slowly growing, up until some threshold then it starts to grow quickly. In that case many such blackholes appear before the catastrophe, but, it still not universal solution, as some civilization may not build colliders.
Because the idea simultaneously explains Fermi paradox: every civilisation destroys the whole visible universe, by creating a new universe, so we are the fist and last one.
It explains Fermi paradox, as well as fine-tuning of our universe for the black -holes AND for the civilization appearing.
However, there are still many holes in the idea, as some civilisations may not build LHC, and also fecund theory suggests that many new universes appear from the first one, but in the case of false vacuum decay caused by LHC it is the only one new universe and with different properties. And if there are many blackholes from LHC, they will not destroy the universe and even Earth.
Maybe micro black holes may do its bad job slowly, like for 40 years it will sit in the center of earth slowly growing, up until some threshold then it starts to grow quickly. In that case many such blackholes appear before the catastrophe, but, it still not universal solution, as some civilization may not build colliders.