Yes, they can. That was the focus of the RadioLab update on the Alpha Gal pigs. The person that loved meat before getting the allergy had moved on to a non-meat life. And when the company started marketing alpha gal safe meat, that person was the inspiration and the person was not happy about it.

Yes – they also discussed this pretty extensively in the RadioLab segment.

In the second segment (linked by GP), they first re-played the previous segment (also linked by GP) about alpha-gal allergy. They then revealed that the company behind the alpha-gal safe pigs (which are being grown for medial research purposes) heard the previous one about the alpha-gal allergy, and after hearing it decided to seek FDA approval for alpha-gal safe pigs in the food market (which they received).