Is this sarcasm

Oh, but that is not a minus. That’s a hyphen-minus. A proper minus (−) is almost the same width as an en dash.

It's an en dash which is supposed to denote ranges eg 2013–2024 basically meaning 'to' so it's still incorrect here even if it weren't extremely similar to - or negative and easy to confuse.

I think to 99+% of people that's not "clear".

Typographically the latter character is not a minus sign, it’s an ASCII hyphen-minus, which is usually designed to look more like a hyphen than a minus sign. An actual minus sign typically looks more like a dash than like a hyphen-minus.

- hyphen-minus

− minus sign (should have equal width to +)

– en dash