On the one hand yes, he's perfectly free to do whatever he likes without judgment (as long as its legal). Although, one could argue it's rather eco unfriendly to ship all that food instead of eating the food that's been prepared in his all-inclusive hotel and thereby creating more waste.
On the other hand, somehow, the Daily Mail has found out about his plan and he's happily posed for or submitted photos to the paper. Having put himself deliberately in the spotlight I think he's ok with people talking about him.
I don't know if that deliberately going into the spotlight. If I do something unusual (which im sure I do) and some media outlet wants to make a big todo I might pose for the spotlight but I did not call the spotlight.
This isn't gatekeeping, it's celebrating! He has slightly let the side down on the Jaffa cakes but he knows he can get Cadbury's Chocolate Fingers anywhere.