I swear we use to be able to email the requester from a task at one point.

Example:

Ticket technician creates a task for another technician to complete.  The Task technician needs to email the requester.  If send email from the ticket, the ticket technician gets notified but the task technician does not.

Currently, the way built, assumption is the ticket technician is doing all the work and there are many use cases where there are one or more technicans that are working on a ticket.  That's where the tasks come in and the ticket technician is the overseer that all is getting complete.