Even if they don’t rupture, they’re getting washed away by magnitudes more water than they can deal with. (In a similar vein, I find general spray cleaners just as effective on unwanted insects as insecticides, but with no awful odors/volatiles, and ready to wipe clean.)

Bacteria can produce biofilms in an attempt to hold position, hence the need for scrubbing to break up their defenses.

Some soaps used to have antibacterials, but that just resulted in resistant bacteria wherever they ended up.