Bek appears to be worried that police might expect bicyclists to pull over into any driveway (or maybe even unpaved shoulders) any time five cars arrive behind them, as a consequence of applicability of the turn-out law to bicyclists.
Those CA cyclists who are raising the SMV laws appear to be responding to bicycle-specific FRAP laws under which cyclists are sometimes cited when even a single vehicle - typically the police officer's - arrives behind them. The CA cyclists are attempting to assert their right to occupy the travel lane and impede a modest amount of traffic like other SMV operators do, against the wishes of some police, who expect cyclists to allow all traffic to pass with zero delay by staying at the extreme edge of the pavement.
All I can say is, having no bicycle-specific FRAP law and no 5-vehicles 2-lane turn out law here in NC is highly preferable to the mess in CA.