Trigger card to use for Google Assistant commands

I have been successfully using the Google Assistant with triggering flows like switching on tv through Homey.
Due to disabling voice commands I am about to remove voice commanded flows.
However, if not mistaking, Google Assistant requires this voice command to trigger a Homey flow? I have a lot of Virtual Devices that trigger flows, so if I can remove the voice commands, it cleans up.

Do I understand correctly that when I want Google Assistant to trigger a command in Homey, I need to have a flow that is triggered with the trigger card Speech: ‘…said something…’? (I am using the Dutch Google Assistant).

Example: Google Assistant: tell Homey to…
Trigger Card in Homey: ‘somebody said something’ or ‘a user said something specific’.