Is it true or wrong that all ports of `SWITCH are in one broadcast domain?

here is a description of the sentence:

https://gss0.baidu.com/94o3dS.

it says above that all ports of HUB and SWITCH are in a broadcast domain, and each port on the router forms its own broadcast domain. I can understand the description of HUB and router, but all ports of SWITCH are in one broadcast domain , because SWITCH divides VLAN, and each VLAN is a broadcast domain.

Mar.11,2021

in the past, a switch was a LAN, and a LAN was a broadcast domain.

then the switch supports VLAN, and each VLAN is a broadcast domain.

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