It’s sensational to talk solely about burqa’s and niqab’s, but this applies to motorcycle helmets and balaclava’s too, of course.
But this is simply just hide the intent of the law. As others have pointed out in below advertising and performance art is allowed. So Gucci Burkas are a-okay legally speaking as they advertise the brand.
Likewise if you look into the issue, Switzerland has also by referendum banned the building of minarets 10 years ago. Both referendums were spear headed by Walter Wobman, a right wing MP whose literal political positions are both anti-migrant and anti-“Islamization”.
These things are so transparently racist that you can disprove these talking points about “equality under the law” for face coverings by a few clicks and some light reading.