I remember when USB 3 was finalized and they introduced a MacBook Air, Schiller or someone was on stage and said “You’ll notice, unlike other pc manufacturers, we didn’t make our ports blue to signify USB 3 vs USB 2. That’s because every port is USB 3.”

(It’s a limitation of the I/O bandwidth on the M1, which makes me wonder why they didn’t wait for a new generation before building desktops with it. Maybe they were afraid of having no iMacs on the shelf since the old ones were discontinued?)