"Otherwise, it risks reducing, rather than enhancing, safety."
For who?  Rumble strips are put in to warn incompetent drivers that they're losing control.  In spite of the possibility that bicyclists could have a less comfortable ride I'd think alerting daffy drivers would enhance safety.
As far as bicyclists inserting themselves into traffic lanes that would be fine as long as they can travel at the speed limit for sustained periods as far as I'm concerned.  Sadly the law pertaining to slow moving vehicles obstructing the legal flow of traffic doesn't often apply to bicycles.  However any competent and courteous user of the road, no matter what motive power the vehicle uses, who either willfully or by need travels at substantially less than the speed limits or the conditions allow will get out of the way as soon as possible.