Clarify that current editor will still be in WordPress

Can you clarify something. My understanding is that Gutenberg is a REACT override of the current editor and that we can disable it by either using a plugin like yours or use other methods to make WordPress fall back to using the current editor, for example by putting the following in functions.php:

add_filter(‘gutenberg_can_edit_post_type’, ‘__return_false’);

I have tested that with the Gutenberg plugin enabled and it works

Gutenberg Times has a post listing all options:

https://gutenbergtimes.com/10-methods-to-avoid-gutenberg-on-your-website/

I note from this article that it is planed to change the name of the filter I have above to something else on the release of WordPress 5 which is a bit aggravating.

I see some people are under the illusion that only Gutenberg will be in core and that you need the Classic Editor plugin to actually re-install the current editor. Do you know if this is what the people working on WordPress are intending to do as far as I can see the Classic Editor plugin and others like yours just disable the Gutenberg experience.