I think you will find it's the law that doesn't allow alcohol and tobacco advertising, the law set by the government, not French football or any other sports governing body.

Take anything we can get. One of the big sponsors is mushy peas ffs

Purely from a designer's point of view, there was never a better branded competition than when the Challenge Cup was sponsored by Silk Cut.

My grandma still calls it the Silk Cut Challenge Cup & Embassy for the snooker even though they haven't been the sponsors for ages now

Down with car/motorvehicle sponsorship, one of the biggest global killers. over a million people annually killed by motorvehicles, tens of millions seriously injured. motoring subsidised by all tax payers even if you don't drive, increased pollution causing premature deaths in tens of thousands in the UK alone, then we have obesity levels rising and the massive costs from that on the NHS, all down to people driving.
Why isn't there a big furore about sponsorship deals there?
Frankly it's bollox, if human beings can't control themsleves, whether that be driving and killing people, smoking/not smoking, drinking/not drinking (or drinking excessively) and gambling etc then that's down to the individual's. Banning sponsorship on the back of the harm to society it may have is nonsense because these people would do harm without the sponsorship in any case just possibly with a different product that isn't advertised/sponsor of an event/team.

I follow cycling and last year there was an Italian lower level MTB team sponsored by XHamster, if you really think about it, it's far less damaging to society than some of the supposed 'ethical' companies/industries.