Most of the time, when Lexis Czumak-Abreu is troubleshooting a sparking outlet or stripping cables in a ditch, the size of her fan base doesn’t mean too much to her.⁠ ⁠ But then she’ll be strolling through the airport in Las Vegas, and a stranger will call her name. ⁠ ⁠ Some 2.2 million people on TikTok, Instagram and Facebook watch Czumak-Abreu do her work as an electrician in Cornwall, N.Y. ⁠ ⁠ “You feel just like a normal person, until you actually get confronted by people and you’re like, oh, my goodness, this is real, people know who I am,” says Czumak-Abreu, the 27-year-old daughter and granddaughter of electricians. Since she began posting videos from her job in 2022, she’s gotten thousands of messages from viewers saying she sparked their interest in trade work. ⁠ ⁠ Czumak-Abreu’s path is one that more young Americans are considering. Skepticism about the cost and value of four-year degrees is growing, and enrollment in vocational programs has risen as young people pursue well-...