Yes the trouble with the Fermi paradox, is that there are so many possible explanations, not too few. Three that I really like because they are not often mentioned are.

The evolution of second generation stars, (needed for life ) and life itself takes time, so that life is only just reaching the space travel stage everywhere.

There is an as yet undiscovered doomsday technology, which all civilizations are bound to discover sooner or later, and which always destroys all life in that solar system as soon as the switch is thrown for the first time.

All technological civilizations destroy their own ecosystem.

But I am sorry to say that it is most likely, that people, as in this article, who dismiss the problems of space travel just don't understand the problems, certainly we don't seem very likely ever to make it.