Earlier quoted context omitted.
Most people have no clue these features exist, or that Excel even has advanced data modeling that supports all sorts of goodies including strict types and joins/merges/appends. It's not as accessible as just basic sheets, but I've had no problem crunching millions of rows of data in Excel with sub-second response times.
isn't excel limited to just over a million rows?
But I’d be fascinated what kind of system spec is required to get good performance on those kind of numbers. I’ve been on a Mac for years, where Excel is crippled by limitations.