Whipped cream or ice cream?

my first thought was ice cream. But after eyeballing the recipe I'm thinking (softly-) whipped cream. I'm not good at decisions...

This has been a polarizing question at dinner parties here. People do not take this topics as lightly as, say, global warming or the existence of extraterrestrial life. I have found that in order too avoid fights, scornful looks, gnashing of teeth and rending of garments, it's best to have both. You migh want both caffinated and decaf coffee too.

The sweetness level is a good point. Here's the ingredient list. I am wondering if I'd be better of with crème fraîche. (Sorry it's sideways).

Both! : )

IMHO all are right.
Depends on your family and guests tolerance/desire for sweets.
If high, use ice cream or sweetened whipped cream.
If the tart is sweet enough, top with unsweetened yogurt, sour cream, cream fraiche or whipped cream.

I'm a recent convert to this whipped cream flavored with freeze-dried fruit from Bravetart, http://www.seriouseats.com/recipes/2016/08/super-thick-fruity-whipped-cream-recipe.htm

Thick and so stable you can make it ahead of time. I recently made a strawberry one and used it as the frosting for my daughter's birthday cake.

So my first thought was to have a perfect little scoop of a really good vanilla ice cream with this - especially if the tart is being served warm.