If they do they shouldn't. There is soo much waste generated from outdoor gear. I can't tell you how many useless plastic bags I had to throw away when I worked at REI. Piles and piles of trash on shipment days.
But hey, as long as people are getting out and enjoying/trashing the outdoors!
BD gear never used to come in a plastic bag with silica gel, because they never used to ship the gear all the way across an entire ocean. Camalots, hexes and stoppers used to come from Ventura, then they came from Salt Lake City.
My typewriter doesn't have the proper keys to write out where BD gear comes from now.
The bag and gel trash issue might be the least of your worries,
because . . . . . . . .
FWIW, I've tried the tip about putting 'em on your dash to help prevent fogged up windows. It's work so far this winter in my carpool. Four warm bodies folded into a compact car for 30 minutes early in the morning. Those gel packs had their work cut out for 'em.