That is one awesome Alien... It is just impressive.
If what you posted is true, I have two things to say.
1) It could be they do not have bad intentions for what they are doing. I don't know if you've noticed, but the smarter a person is, the crazier they become. Like Van Gogh. So it's possible they're just protecting humanity... or something.
2) I forgot. But I know I had a counter-argument to it, so I'll just go on. Humanity doesn't really need any leaps in science. People are finding things already, discovering amazing possibilities, theories, etc. and also creating an evolution already surpassing the normal standards. We're doing just fine. I don't think we need to rely on help from space. Though, it could be really useful for a lot of things. Now I remember what I was going to say... ugh. Never mind, figure it out yourself.