Yes, that’s what bridges devices in the IKEA ecosystem to Matter so SmartThings can integrate them.
Matter is a common language and, for non-Matter devices, you need a translator. That translator is the bridge which usually belongs to the same vendor you want to bridge, in this case the Dirigera.
The article is written like if was something special with IKEA but it’s the same for any other brand with Matter bridges like Tapo, Aqara, Hue, Switchbot, etc. it’s the beauty of a common language after all.
However, IKEA bridged buttons for instance don’t have all the events that you’ll get with custom drivers connecting them directly to the SmartThings hub via ZigBee.