Nope, if you follow the link I posted you will see many of them are listed as "Quad display via MST" as in the multi-stream transport in the displayport (not displaylink) protocol. The dock I'm using supports Quad display via MST (1x hdmi, 2x displayport, 1x thunderbolt 4 pass-through) and it was launched back in September of 2021, 2.5 years ago.
That being said, some of them do require displaylink so definitely make sure you're being careful when shopping.
