Sure presentation is part of it, but you’ll only be looking at them for a few seconds, then they’re gone.
Take The Magnolia Bakery chain for example, (made famous by their association with the dreadful Sex and the City series).

Most online reviews for that establishment are very mixed, erring on poor.
The staff are often very snooty or rude, and the cake is often very dry. On the whole, quite overrated.

It might all look very nice, but they let themselves down in some very important areas, crucially the taste, which is what you are paying for.

I have no problem with something that looks simple, if anything it reflects the fresh handmade nature of the cupcakes you’re buying, and having tasted them I know I couldn’t make cakes that taste better myself.

Been so popular it stands to reason that they are very busy people, so if the presentation needs to be simple for the sake of time so be it. As long as they continue to taste good, which in my experience they do.