I don't understand these naysayers. I'm not trying to be mean here, but is there anything more to that than an old guy complaining about how it was awesome in his time and age, and how we get everything wrong nowadays? I'm genuinely asking - are astronauts talking about space programs similar to actors and celebrities taking about moral or political issues? I.e. just famous but not so smart people?
Also, Elon's take on this three years ago:
https://www.youtube.com/watch?v=8P8UKBAOfGo