Thanks for confirming my frustrations.
How have Squarespace not identified this is a major issue?
I would deter my clients from using Squarespace based on this fact alone.
What's the point of having a site if you can't optimise it for search? I know meta data isn't the only factor but it's a bloody big factor.
I wonder how many Squarespace sites rank at the top of Google search based on the dynamically-generated meta data that, I would argue, isn't useful.
I think Squarespace focus selling to people who want pretty looking sites and not one that functions well in all areas.