Look: some people (celebs) potentially have sophisticated opponents and truly need high security. They know who they are, and should willingly deal with complex passwds. Why impose them on the rest of humanity? People should decide for themselves.
Forcing strong passwds is just laziness and avoiding implemention of other security measures like rate-limiting, IPgeo, lock-out, oh yes, and hashing passwds! Yes, lockout can cause DoS but I'd like the notice and after unlock would have complexity to be able to do without.