This trend is mostly noted in pyramid schemes

Take anything too far, and it loses value. Also that the "pep rallies" don't work for everybody in all situations. I tried my hand at sales, and only got aggravated at sales meetings...I was no good at sales anyway, and all those meetings did was keep from from making more pitches.

To make it clear, I agree with the point of your post; too much positivity is a bad thing, especially when it is generated by bullshit.