Anything they do beyond finding a way off our planet, i.e. close to home, is a waste of time and money. The fact that there is anything out there far far away is no use to anyone. All that brain power completely ignoring real threats to our kids and grandkids. They should be ashamed of themselves.
You are probably right.
We just have to face facts that no matter how many hospitable worlds we may find we will never actually be capable of applying the effort needed to get there until it is far too late. We know this because we have a perfectly fine planet here but we are slowly destroying it ourselves and we know we are.
We could spend tons of resources figuring out how to get to these planets and we could do it but so far we would rather focus on blowing each other up.
I think we know deep down that us humans will one day become just as extinct as the other 99% of life that has ever lived on Earth. The sun already guarantees that life will one day end here.