I’m I’m not mistaken, the reasoning for this goes back to the printing press era. The comma or period would be on the same type block as the quotation mark; dealing with individual blocks for , or " was too fragile or fiddly. So they had blocks for ," and ." that were used regardless of sentence structure

Windows 98SE was peak design

Obligatory Technology Connections

https://youtu.be/TbHBHhZOglw