(JMac has already spun me the VFR-in-E-over-LAX furphy, where VFR have to be on freq, talking, with a transponder - good idea that)
Bloggs,
Get out and smell the roses.
The transponder requirement over KLAX has nothing to do with E airspace, and everything to do with the transponder veil that surround all Class B airspace in the US.
Sure, there is a frequency to be on, but read the KLAX local chart for VFR lanes ( through the
B) --- then tell us all where the "mandatory" talking is !!
Have a look at where the E starts, height-wise, over KLAX.
KLAX and KSFO are the two areas I know really well, both in large and small aircraft, ( and so does John McCormick) you are looking at it from your myopic "little Australia" perspective --- but what else would we expect.
Tootle pip!!