I have it, its called alpha-gal. It comes from a tick called the lonestar tick that has bitten a deer and then when it bites you your immune system reacts to it. Every time you eat red meat or "anything from the hoof" (pork is red meat) or products containing it like gelatin, binders in pills, shampoos, etc, etc, your body reacts with an allergic response= anaphylaxis.
The article, title in particular, is very misinformed and misleading. The particular sugar they mention is found in all red meat, and is what is transfered from the deer to the tick then to you causing your antibodies to attack it, as well as any future red meat intake or contact with products made from red meat. You have no idea that most of the things you use, not just food, have red meat products in them.
I love steak, hamburgers are probably my favorite food. I have to avoid all meat products and carry an epipen for quite a while. My levels are low and may eventually return to zero allowing me to eat red meat again. I broke out all over my body, rash and lumps, severe abdominal pains, constipation, severe breathing issues like suffocation, throat closing off, and more. It sucks! Its also caused gluten sensitivity which makes me itch and sick.
You say people are getting outdoors more, but there are far fewer people outdoors today than there were in years past.
I have been big outdoors person my whole life, and I got my tick while mowing the yard. Its far more common than you realize although small in numbers to the entire population, but trust me, it can happen to you and a lot of doctors dont recognize the sign, I went to the ER multiple times.
This is a map of reported cases just in the US.
The CDC doesn't even want people reporting it or lyme in a lot of states because it affects tourism. My hospital refused to report it or take it seriously. Luckily one of the doctors that helped develop the test is an alergist (Tina Merrit, formerly Tina Hatley in the article) in my state and she has it.
Facebook has a page of people that have it. If you know someone read up. Read up on symptoms yourself because doctors don't know about it because its rare and dont take it seriously when they do find out you have it.
Its a serious condition, anaphylaxis can kill you in minutes or in the least cause you to be seriously ill. I know multiple people that have it and one man that died on his way to the hospital after two self administered epipens and more doses in the ambulance.