Michael Sumner

<blockquote>
Does one thing: disables the Widget Block Editor feature.
</blockquote>
Activate this plugin to disable the Widget Block Editor functionality (added in WP version 5.8). To re-enable the widget block editor at any time, simply deactivate the plugin.
Features
<ul>
<li>Simple to use – activate and done.</li>
<li>No permanent modifications are performed.</li>
<li>There are no configuration options to worry about.</li>
<li>Easy peasy.</li>
</ul>
Why is this useful?
WordPress 5.8 was launched on July 20, 2021, and contained some enhancements to the WordPress block editor. Among those features was an introduction to WordPress’s new Widget Block Editor.
Now, why would you want to deactivate this function in the first place? You may have script conflicts that prevent you from using the widgets due to the block editor and conflicts with other plugins.
Privacy
This plugin does not collect or store any information about the user. It does not use cookies or link to any third-party websites. Thus, this plugin has no effect on the user’s privacy.

Disable Widget Block Editor

Activate this plugin to disable the Widget Block Editor feature that was added in WP v5.8.

Matt Martz

Easily disables the visual editor globally.
Hooks the user_can_richedit filter and returns false so that the visual editor is never used. Much more efficient, simple and reliable than the other disable visual editor plugin that requires you to delete the visual editor files from your install.
<h3>Upgrade</h3>
<ol>
<li>Delete the previous <code>easy-disable-visual-editor</code> folder from the <code>/wp-content/plugins/</code> directory</li>
<li>Upload the new <code>easy-disable-visual-editor</code> folder to the <code>/wp-content/plugins/</code> directory</li>
</ol>
<h3>Usage</h3>
<ol>
<li>Just activate and enjoy! No configuration required.</li>
</ol>

Easy Disable Visual Editor

Easily disables the visual editor globally.

Disable Widget Block Editor vs Easy Disable Visual Editor