They made a stupid mistake, they should not be allowed to get it back.
That's maybe going too far. Clearly this is a prank. The current owner has the right (abstractly -- honestly I have no idea how this works in French law) to express their opinion as parody, and Michelin shouldn't be able to use the trademark as a cudgel to suppress that. That said, the proper remedy here is for them to buy back the domain name at a fair market price (whatever that may be, again I have no idea). The o…
Since there is a supply of n=1, please define what an "unfair" price is, if you're not comfortable with defining it as the amount that Michelin is willing to pay.