I'm cynical about a lot of 'trends' that have popped up over the year, because oftentimes they're just compromises or marketing to get employees to join them. Notably, in recent years, a LOT of employers / recruiters will stuff "IoT" or "Blockchain" into their job descriptions, knowing full well they do nothing with it - or if they do, it's a couple hours a week they give up on to keep the employees happy, interested and motivated. It's a weird theater.

Most of those jobs are generic Java work, but it's hard to find motivated / qualified people to work on just that.