This specific thing is much more a JetBrains (and their customers) problem than an Apple problem and it looks like they've managed to put together a good soluti

This specific thing is much more a JetBrains (and their customers) problem than an Apple problem and it looks like they've managed to put together a good solution - do the work and have some assurance it's going to end up in the mainline OpenJDK. They've been selling their tools on macOS for many years, have shipped plenty of custom JDKs before, it's safe to assume they have a decent idea what they're doing.