i really wanted to lead this with a gif of trump denying global warming, but my google-fu has failed me.
Bio bb's are generally fine, been using them on and off for years. you just need to be more mindfull of storage Dump them in a cold damp shed/garage you might get issues, keep them in the house warm and dry? then they will last (possibly not as long as the non bio ones, but at that point, why buy so many if its going to take so long to use them?).
Any reliability issues they suffer are no different from the non bio bb's, you get good ones, bad ones and sometimes bad batches within the good ones, as mentioned with my experience with asg open blasters.
When it comes to environmentally friendly, i doubt you have personally studied the rate to decomposition. Which is fair as thats anything between 2 to 4 years. my source? the back of a bag of G&G bios:
having played with both bio and nonbio (one site i go to only allows bio) there is no performance difference i have seen. modern ones are definately not the bio bb's of old, which did have so many issues. i am always suprised when woodland sites dont insist on bios, there must be already a good layer made up of millions plastic balls on that ground and its only going to get thicker.