As of the time of writing (2022), whether you can get a vegan pumpkin spice latte from Starbucks or not depends where you are in the world. The pumpkin spice sauce used to make the beverage in America and Canada contains dairy. But, the pumpkin spice sauce in some parts of Europe (UK, Netherlands, France, Switzerland, and Austria) is dairy-free, so if that's where you are, as long as you have them make it with non-dairy milk and hold the whip then your latte can indeed be vegan.