In reply to Ripul.

I absolutely agree. You can already see that when new wordpress updates are promoted, all page builder struggle to update too and there will be even more update issues with sites built with all the bigger page builders out there.
In my opinion, also in terms of site speed, publishers should already switch to the gutenberg block editor NOW which has the advantage of saving the time to adjust pages in the future while already profiting from having a speed advantage because Gutenberg is a core wordpress application. Since there is no “tranformation” tool around and probably will never, webmasters can get help through services like http://www.builder2gutenberg.com