It's mostly about Barrett and the social media popularization of birding, leading to pressure on birds/habitat. But yes Candido is mentioned briefly but critically - it's said he is known for heavy-handed use of bird-call playback and flashlighting (both generally considered questionable techniques) when leading owling groups. I'm not well versed in CPark drama, but from an outsider's POV, I thought the emphasis was on the need for extra caution when using social media etc. as an integral part of birding. Of course twitching has been around as long as birding, but bringing crowds of people into the mix does seem to be a double-edged sword. It's great to introduce noobs to birding and raise consciousness re ecology etc. but I would think it needs to be substantive.
Anyway, it was mostly interesting to me to learn about Central Park, which was only on my radar from your thread which I always enjoy!
BTW, safe travels!