In reply to Clarence Johnson.

The answer is much more nuanced than what some replies to your question might lead you to believe.

This is not a hard cutoff date. In the post that folks have linked to, Gary makes it clear that the WordPress leads will reevaluate official support of the Classic Editor plugin at that time and will make a decision based on usage. If there are 5+ million active installs, I seriously doubt they will drop official support until much later.

Even dropping "official" support does not necessarily mean the end of the Classic Editor altogether or some form of it. There are other, existing plugins that handle the job. And, as long as there is a large enough market for alternative editors, plugin developers will take advantage of that market. Can you imagine not a single plugin development business trying to capture a market of millions?