AWS got a reaction from bangank36 in Additional Information for product page - Advanced options?
Tabs on Additional Information would be helpful.
AWS reacted to paul2009 in tables from csv files
Sadly, there isn't a solution built into Squarespace for this, or for tables generally.
However, if you are willing to pay a small amount for a third party product, I thoroughly recommend the Custom Table Block. You'll get your own 'Table Block' in Squarespace and it allows you to link directly to a Google Sheet where you can store (and easily edit) your CSV content.