As more Americans embrace sobriety or explore alcohol alternatives, a growing number are turning to THC-infused beverages. In South Florida, the trend has gained momentum, but a proposed regulatory change could soon reshape the market. At Funky Buddha Brewery in Oakland Park, known for its craft beer since opening in 2013, a new product line has emerged: THC seltzers. “I would say about six months ago we launched the product,” said co-founder Ry…