It shouldn’t make assumptions about your data by default, and changing values that look like they’re in a specific format should be opt-in, not default behavior
But that’s exactly what made the “auto” data type of Excel such a powerful tool when introduced. If you’re storing text, make the datatype “text”, problem solved.
Nowadays, when making stuff like Excel from scratch, you could opt for a “these look like dates, change the type from ‘none’ to ‘date’?” but with middle management being conditioned on the data type being ‘auto’, that’s something that’s hard to change.
Honestly, I’d say you shouldn’t do that prompt method. The auto type is genuinely great for the use cases which Excel is supposed to be used for, from someone managing their household finances to charting the growth of a business.
By all means, it absolutely should make assumptions about your data by default, as that’s incredibly convenient for the average user. You can always change the type of a cell afterwards if what you’re doing is special.
