Gutenberg is more flexible in creating content, such as columns , timeline animation blocks, etc.
Moreover, Gutenberg blocks can easily work with other plugins like https://www.ads-software.com/plugins/text-popover/ a cool feature that only works with blocks to add explanation to content (quite useful for me).
I would appreciate it if your team could give it a second thought about supporting the Gutenberg block editor (as many other WordPress LMS have already done so).