None of the Wells Fargo employees will actually participate in the planned "silly" Walk Out instigated by someone. Because they really do want to still be Wells Fargo employees and not lose their jobs.
There is always someone else out there in the World ready to take your nice job if you do not appreciate it. Many employees work with no benefits at all. An hourly wage, no health benefits,no paid vacation, no paid holiday time off, no 401K, no nothing. Just working hourly with no benefits at all so don't complain too much or you may get that type of job next.
The OP said it right. A walkout won't solve anything, but rather make it easy for the management to put a list together of who will be cut next.