Ideally, yes. There are a lot of times you need it though:
1. Recurring meeting events have to take place in a certain zone so that the right epoch time can be calculated for the recurrences across DSTs
2. Even single meetings need them (see other post in this thread)
3. You may need other zone's local times. Imagine you're scheduling shifts for people to work. If you're in a different zone than work is scheduled in, the presentation later needs to know that zone to compute the right epoch times.
1. Recurring meeting events have to take place in a certain zone so that the right epoch time can be calculated for the recurrences across DSTs
2. Even single meetings need them (see other post in this thread)
3. You may need other zone's local times. Imagine you're scheduling shifts for people to work. If you're in a different zone than work is scheduled in, the presentation later needs to know that zone to compute the right epoch times.