Yes, and you need good regional rail to support it as well. That way you can use high-speed stations as a hub for lesser used small town services.

Literally just watched Jarrett Moore’s video on the guy, the timing!

https://youtu.be/SqdtRnjK_qM

The Brisbane public transport is pretty bad, but there are more reasons: the bus network is owned by the council while the train network is owned by the state government. As a result both tend to compete with each other. This is especially bad when the busses don’t even cover some areas. Partner went for a course there recently and their best option to reach the place on public transport was to just walk 40 minutes from the train station! I can’t think of a single area in Sydney that wouldn’t get a bus service at least once a day on a work day. (You know things are bad if you’re comparing to Sydney busses because these things are terrible)