I've used emacs nearly daily, most of that time with emacs --daemon and computer uptimes measured in months, on macOS (nee OS X) for nearly 20 years. It works fine. I've never encountered whatever issue this post is about in all that time. I cannot think of an instance when emacs froze up on me.
~22 years of daily Emacs on MacOS, and never encountered (or never noticed) it, either. Perhaps a build issue. I think my Linux builds may run slightly better, and Windows slightly worse, but I haven't had a problem on Mac in decades.
Thirded. I don't doubt that some people have problems with it. Software that runs on lots of differently-configured and -maintained systems will do that. However, I don't think that's the common case. I wouldn't say I've never had problems, but they've been rare and minor inconveniences at most.