The problem is that it also prevents countries from reducing the regulations in order to foster local innovation, avoid disadvantageous rules (there are more lobbyists than bureaucrats in Brussels, for a reason) or adapt to a new reality (AI being a good case). Moreover, each country still have their own specific laws, the EU regs come on top, and don't decrease the amount of laws. And the EU votes a lot of laws, since its the main power it has, on average 7 per day.