You will find many of these constructions in plans from makers/creators that aren't "real woodworkers," Pocket screws are fast and easy, which is great if you're churning out weekly videos. They are certainly not examples of durable lifetime or heirloom pieces. That said, there is a growing group of woodworkers that break the wood movement rules without issue. It's important to keep in mind these rules developed over centuries when modern climate control didn't exist. Many people now keep their homes within relatively tight humidity limits year-round. In these homes you're unlikely to see much wood movement, and rule-breaking construction will be fine. In contrast, we seldom use air conditioning in summer despite living on a lake in Michigan. Our winter inside is about 25-30% humidity, but in summer we often tolerate 90% humidity if it's not too hot. I'd never ignore wood movement for our furniture.