"As that recycled product can contain a wide areay of possible contaminants that some plants will fail to thrive in, I would not opt for this route."
i've never seen any evidence of any problem along those lines. the worst problem i've encountered is lots of mushrooms! the stuff is so fertile, it sends up flushes of all kinds of mushrooms. several years ago, i made a conscious decision to avoid fear, paranoia, and negativity. that decision has worked well for me.
tomatoes started in bed of approx 75% county compost, 25% composted horse manure, with a dash of limestone, 10-10-10, and trace element mix. thriving? looks like it. similar results with wide array of fruit and nut trees, vegetables, and flowers.