Yeah, agreed. Gatekeeper is nearly 15 years old now, and has progressively gotten more aggressive, but AFAIK there isn't much new in the past year or two. macOS 26 is bad, but so is Windows 11...so unless you are willing to jump into Linux for desktop, there aren't many other options. And age verification is likely going to be an issue with any platform he chooses - are other companies not using credit card?