A taxed " benefit " and that's a no brainer................is no longer a benefit.
That is (kind of) the point. You shouldn't be able to receive "benefits" free of tax.
The FBT (Fringe Benefits Tax) in Australia came about because, through the 80s, a large amount of general tax avoidance in the management sector appeared as contracts became re-written to reduce the (taxed) cash salary paid by including
tax free "benefits" such as cars, computers, housing, schooling, lunches etc etc in the contract instead.
In that sense it is a fair tax, as contracts such as those above can only be negotiated individually. That meant they were not available to general workers - so the tax stopped an unfair tax avoidance.
If, as you have said, the tax the French government was proposing was unfair - in that it wasn't setting a general tax rule for all but was
targeted at individual industries - then yes, it was correct to fight it.
If they re-write the law to make it apply to all, I suppose you will support it then?