One of the biggest announcements at WordCamp Europe this year was the release of the page builder Gutenberg (other important issues, such as WooCommerce doubling their renewal fees, were not brought up). Gutenberg represents a step forward for WordPress and helps it tackle other platforms such as Medium, Wix, and SquareSpace. Whilst I appreciate the importance of this plugin to WordPress, I feel there is an important issue that is not being discussed. The problem relates to how there is are rules on what theme and plugin developers add to your website database when you install their product.
Every time you active a WordPress theme or plugin on your website, you are adding data to the WordPress database. The problem is that the vast majority of themes and plugins do not remove the data they add once you have deleted them from your website.
This is an issue that I have been raising again and again in my reviews of WordPress products and it is a problem that needs more exposure.
Too Much Garbage in WordPress Databases
For any WordPress theme or plugin to work correctly, it needs to add data to the WordPress database.
Simple solutions might add a few rows to an existing WordPress table,
Source: https://managewp.org/articles/15463/wordpress-org-needs-to-make-uninstall-options-compulsory
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