There's multiple delays, arguably for a good reason. First, the law has to be ratified by each member state, which will also mean another delay state-side until legally enforceable. Institutions usually have a warm-up period too until they start enforcing new laws, preferring warnings beforehand.
It might seem inefficient but generally this is the only sane way to roll out changes across a society. Having people coordinate and "change habits" (as deplorable as the present habits may be) is best done gently. Providing ample time and warning for people to find a good course forwards.
