I came from Divi and use it for all my WP projects, but it's just slow in loading.
So when I started to use Greenshift I ran into multiple problems when working in the backend and the editor when you klick strg+z or cmd+z it closes all tabs in the left sidebar and jumps back to the top of the page. Also when building in the editor I ran in the issues that the preview showed a border or a background that wasn't visible in the frontend. Also that the background options jump from the general tab into the style tab depending on the block you choose I've to admit this Theme / Plugin is really fast.
If you just have to build a nice an clean frontage and have a huge content hub attached to your site this is most probably your tool.
If you design a lot of landing pages that you build individually you're going to hate the workflow and usability.
So best use for this tool if you have a Website for a business where you put in the work for the fronpage to make it look great and the rest of the site loading fast but if you're building landing pages that should look great and are easy to configure this won't be your tool since the learning curve and tools are not always easy.