Yes, it really is EOL and unsupported. It happened a year or so ago. If you search this forum you'll find a link to the article. It was more of a blog post than anything really "official"
I recall a blog post but couldn't find it.
Here's an article that announced Director would no longer be sold and Adobe would be "stopping Shockwave for Mac updates and support on March 14, 2017". It does not mention Shockwave for Windows.
Here is an Adobe article on the end of life of Flash (end of 2020):
Thank you both for the responses. I hope someday Adobe will release an official statement so we avoid confusion.