If a little enthusiasm can get you a long way, then this guy will go far indeed. May we all find passion such as his and follow it to our bliss. I say don't hold back!
BTW, apparently "foamers" are excessively enthusiastic railfans. After watching the video, I'm pretty sure I know what that means now.
I guess the "double trainbow" is sort of like the double rainbow below.
To paraphrase the line from "When Harry Met Sally," I'll have what he's having.