It never said they're becoming illegal, it states 'bulb incompatability', which I read as using HIDS with old style non projector lamps.
The other thing it states about ECU's is 'illegal engine chipping'. Engine tuning isn't illegal, and the only way I can summise that it might be, is where some oik is messing with more modern cars ECU's to reset mileages, match engine numbers etc etc.
if something like that does get through and we all become outlaws overnight, I'll be removing my number plates, not paying anymore road tax, and failing to stop for any officer of the law.....it's not like they're gonna catch you anyway