Terry wrote:

If they were not, they would wander north and south of the equator over
a 24 hour period and need a sophisticated steerable dish to track them.

You can still use them with a static dish if they're geosynchronous,
even if they're wobbling in the figure-8 you describe. Maybe not for
TV, but certainly for some data services where a lower signal strength
at the LNB is acceptable.

As older satellites run low on station keeping fuel they often end up
in such orbits, pensioned off to less obvious VSAT services.