The article does not actually claim this is a problem, it states the author thinks it will probably be a problem. I doubt this actually will be a problem for 9

The article does not actually claim this is a problem, it states the author thinks it will probably be a problem. I doubt this actually will be a problem for 99% of all apps, the ‘but what about this essential software from 50 years ago’ problem does not exist on Apple platforms because they routinely deprecate and then drop obsolete software without mercy. The only real problem I can imagine occurring is that this change uncovers dangerous security vulnerabilities that are a crash (so a denial of service) on those platforms but an exploit on others. But that’s a problem for those other platforms to deal with.