In reply to David.

The main problem with any page builders like Elementor, WPBackery and so on - they are 3rd party plugins and require updates even if they are bundled within any premium theme, so you have to rely on theme devs when they update plugins and so on. In 2020, everything should work right out of the box, so it's kinda strange and unsafe to rely on various third-parties. Also, what I learned from several years of using visual composers - these plugins are bloated with options, they are hard to master, heavyweight and if you decide to move from one page builder to another - your site is dead.

In my opinion - Gutenberg is cool and modern builder, stripped off from complexity and unnecessary features though it's really hard to build "professional" sites with it.