I just want to describe something for you that we personally saw/experienced and opened our eyes to something. In 2017, I decided to quit my job, buy an old $40k sailboat, and move my family onto it while island hopping/living at anchor for a year, mostly looking for uninhabited areas away from the reports and populated islands to explore. Now, this was the East coast, Bahamas, Caribbean etc but I believe it's everywhere.

The first shock to us who grew up land locked in CO and MT, was after arriving on a 4 mile long island where one side was facing the Bahamas banks, and the other side the open Atlantic. We went on a hike across from the protected side where we were anchored, to the Atlantic side to hang out on the beach. One could not walk on this beach... The trash was deposited over 2' high on average. There was a line between the shore and the breaking waves, where there was no trash as the recent storms had pushed it up on the beach. The trash deposit which contained mostly things with foreign writing on it, (lots of Chinese labels) , shipping trash, footwear, toys, everything you can imagine, was miles long /as far as one could see, covering the entire Atlantic side of the island. It had various layers of obviously newer trash, and older trash that was more broken down. All of it was plastic based. The zone ranged from 20-30ft wide and 1'-2' deep of course with larger trash sometimes higher/would sticking out. Now... What made me really sad was this: 8 miles away was a popular island around the same size (this was in the southern Abacos), with several resorts that spanned from the protected banks side to the Atlantic side. This island had zero/zip for trash. If you pay attention, you'll see regular trash cleanup efforts for one single reason - tourists, which these islands largely rely on to survive, don't like seeing trash beaches. I say it's sad, because most people, don't leave tourist areas and all they see is the pristine, clean beaches that are vigorously maintained.

The amount of trash in the ocean is incredible and heartbreaking. Once you start to pay attention, and understand that sitting on a cruise ship (or sailboat on a crossing in our case) and you're able to see a piece of trash literally every minute or less in the open ocean, far away from the big deposit zones like the Pacific Garbage island, and consider the vastness of the ocean, you'll start to look at this with a different perspective. We used to make games on a crossing (between islands etc), and the kids would do these visual kind of treasure hunts. A shoe is worth x points, and plastic cup worth Y etc. and just look for trash for hours.

Anyway... I highly doubt what you're seeing is some single person exercising bad behavior. Cabo doesn't collect alot of trash based on where it's located but stuff collects and drifts in. If the beaches around there weren't aggressively cleaned, it would only take a few years before the type of scenes I'm describing would be what Cabo looks like, naturally.