Pohl's hagiography is complete and mostly deserved, but that really doesn't justify lauding this truly poor selection. It doesn't.
"The Merchants of Venus" is the novella-length piece that stands up well here. It's the introduction of the Heechee, well-paced, and a nicely constructed future world. Sadly it still suffers, albeit much less, from the toxic attitude that makes the other pieces here hard to read let alone enjoy. What may pass for some as 'cynical humor' reeks to me of pissy misanthropy and a serious case of chauvinistic inability to write female characters. Throughout "Merchants," and it's the best piece here, he constantly calls Dorotha "the girl" instead of her NAME and the narrator forces himself to admit she doesn't cry or scream much and can even be helpful. Wow, how nice. The main character has his problems, sure, but he's a dick.
As for the other pieces, older characters are either manipulative and corrupt or wheedling and stupid; young characters are either eager but ignorant or unwashed and stoned; humans as we exist are too stupid to survive. Great. The stories are really lightweight anyway, but the jaded crankiness leaves them joyless as well.