How do you use the core blocks? Groups, columns, media + content etc

What is your relationship with the core blocks since GenerateBlocks? I still use the standard paragraph and heading blocks but not sure what is the more maintainable approach to the more complex blocks such as columns, groups and media + content.

Right now I am leaning towards keep using GenerateBlocks for static pages and keep the core blocks enabled for use in posts and maintaining some sensible default custom CSS for the core blocks.