>If we get technology to go at speed of light we'll get there in 300k years
Light takes 3000 years to travel 3000 light-years, not 300k years
Light takes 3000 years to travel 3000 light-years, not 300k years
His previous sentence also makes no sense
> To put some thing in perspective. If we get an instant teleport technology to go there tomorrow, it will be a planet that had passed 5 times more time then we know since our humanity almost went extinct 60k years ago.
The light we see from the planet is 3000 years old not 5 times 60k. Space is big, but not as big as OP seems to think. The diameter of the Milky Way is only 150,000–180,000 light-years light years. All the exoplanets we have detected are within the Milky Way.