[Cowboy Bob]

In Silicon Valley, overstayed IT H1B or on opt status, are joining local crappy University to get student visa

But isn't it true that you can't work on a student visa? How will they support themselves?

[null and void]

But isn't it true that you can't work on a student visa?

Not legally.

How will they support themselves?

At their expired H-1B jobs.

See above.