Why are Unsubscribed from List, Bounced Email, and Clicked SMS not viable triggers for a webhook in a flow?

Klaviyo flows are automation sequences that are initiated by specific triggers. The metrics "Unsubscribed from List," "Bounced Email," and "Clicked SMS" are not designed to initiate a flow directly. Since webhooks within Klaviyo flows are steps within an existing flow, they cannot be triggered by events that cannot themselves trigger a flow. Therefore, if an event cannot start a flow, it cannot be used to trigger a webhook that would be part of that flow. The statement that webhooks cannot be triggered by list-related events is incorrect, as many list-related events (like "Subscribed to List") can trigger flows. The claim that they are all viable triggers is also incorrect for the reasons stated.