1M is xlsx file format limitation, and Excel on Mac can work with 1M just fine. But Excel is spreadsheet and not a database, so if you use it for so big datasets (anything over 1000 rows or so) you are very probably just using plain wrong tool.
Please leave out the snide remarks in spirit of the HN guidelines[1].
> When disagreeing, please reply to the argument instead of calling names. "That is idiotic; 1 + 1 is 2, not 3" can be shortened to "1 + 1 is 2, not 3."
Was that really "name calling"? It's a reference to antennagate and if anything, if you take it within the original context it's really a comment targeting the product Excel, not a person.
Even a million seems embarrassingly puny these days, considering a webpage can have a million checkboxes rendered in only a moment.