"The meteor strikes weren't that lethal."
Like that a huge meteorite that smashedinto the Earth 251 million years ago and caused the greatest extinction event in the planet's history, killing about
90 percent of all life.
or the fact that it is estimated a mass-extinction meteor struck once every 5 million years or so.
And large meteors would have caused Tsunamis that reached across the world if it was during the flood.
Take into account that these are all dated to be at very different times, not all in the same year. I'm not sure how you can justify all the meteors in earths history hitting then.