Hello!
I need to track deletion of a course section. I found core\event\course_section_updated event, but not a course_section_deleted event.
So is it right to observe core\event\course_section_updated for this?
May be that list is not up to date/out of date. Please Follow site administration > reports > events list and search for "\core\event\course_section_deleted". Even you can check your log reports for this.
HTH