[cmatthias]

Almost certainly. The Thunderbolt spec requires any port labeled "Thunderbolt 4" to support dual 4k/60hz displays.

You'll note that, for example, on the Macbook Air (both M1 and M2 versions), Apple labels the ports "Thunderbolt / USB 4," which is confusing and IMHO downright misleading. Either way, the reason they do that is that those ports don't support dual displays, so they only meet the Thunderbolt 3 spec, which doesn't mandate dual displays.

A better label for the Macbook Air might be just "USB 4," or "USB 4 with Thunderbolt 3 support" (though TB3 is part of the USB 4 spec, so that's technically redundant).

USB/Thunderbolt standards are fun.

[seanw444]

USB standards are a giant clusterfuck. I don't know how they managed to get it to this point.