To grab a couple bits of info from that page + google, to give people a good idea of the distances involved at a glance:

    Starlink orbit:           550km
    Geosynchronous orbit:  35,786km
    Earth's circumference: 40,075km

Geosynchronous orbits are quite a way out. Latency at terrestrial distances can be painful already, bouncing through geosynchronous satellites will be multiples worse at a minimum. Meanwhile, Starlink's are at "normal" distances for networking - you probably connect to things further away all the time already.