Is there DMV for seeing view access count?
No, but what the presenter was probably doing was using Grant Fritchey's technique to search the plan cache for a string. You can search the plan cache for your view name.

That technique has a few drawbacks. It's very slow on a busy/large production server - it doesn't hold folks back by blocking, but it can just take a really long time to search, say, 10-100GB of query plans looking for a string. Also, it only searches the literal plan - if you have a view calling another view, the nested view's name may not show up in the query or the plan.