That's simply not true. I had three different laptops from 2010 to 2021: an Acer Inspiron (I think that's what it was called), a Dell Latitude, and a Surface Pro 3. All used different chargers. The Surface used Microsoft's proprietary magsafe connector, and the others used different-sized barrel jacks. I currently have a Dell XPS 13 which charges over USB-C.

Oddly, the Acer charger was the same as for an Acer 27" monitor I had, which came in handy once or twice.