It is definitely a real cheese - from Wiki:
Boursin is a brand of soft creamy cheese available in various flavours, with a flavour and texture similar to cream cheese.
The first Boursin flavour, garlic and fine herbs, was created in 1957 by François Boursin, a cheese maker from Normandy.[1] Boursin's product was derived from a traditional party dish, fromage frais (French for "fresh cheese"); guests would take their cheese and add herbs for flavour. His recipe was the first flavoured cheese product to be sold nationally in France.citation needed]
Boursin cheese was first developed in Normandy,[2] and at one time was produced exclusively in Croisy-sur-Eure, France, by the Boursin company. In 1990, the Boursin name was acquired by Unilever, who sold it to Groupe Bel in November 2007 for €400 million.[3]
... although undoubtedly mass produced these days. As are many cheeses that you might have on your cheeseboard!
Interestingly, also from Wiki:
The "Original", most popular,[6] Mini Babybel is an Edam-style cheese made from pasteurised milk, rennet, lactic ferments, and salt.[7] It is made using traditional Edam-making processes, except that rennet from vegetarian – rather than animal – sources is used. It is also naturally lactose-free.[7][8]
So you could also claim that Babybel is proper cheese too. It's the packaging and the implication it's for children (as well as, I guess, its very mild taste) that seems it has no place on a 'proper' cheeseboard.