You're right, the root cause here is jealously, boredom, and a typical bully attitude.

However technology is a core feature of the root cause that the protesters claim. They are not angry at moderately wealthy workers in general, they are angry at moderately wealthy workers from technology companies in particular. They make this excruciatingly clear.

And do not even think of telling me that the only wealthy people in SF are those working for technology companies. That is bullshit, and you know it.

They are angry at companies who provide corporate busses to make neighborhoods more comfortable for their employees than they are for other people, rather than supporting public infrastructure that everyone benefits from.

As to your comment about 'bullshit' - you seem kind of angry.