It’s pretty sensationalist but I don’t disagree with the content of the message: by sticking with a float or flexbox-based grid system from a framework, you’re

It’s pretty sensationalist but I don’t disagree with the content of the message: by sticking with a float or flexbox-based grid system from a framework, you’re not learning the intricacies of newer tech like grid. That being said, for most of my professional and personal work I only see grid as an incremental improvement over flex. It’s cool but time I spent learning it I could have just used what I already knew and create more things the customer actually cares about.