It should also be pointed out that not only do we have a technology mix, there are also two HFC networks operating independent to each other. Those on Optus' old HFC who are now on NBN are likely getting excellent connection, because those areas were the test case for seeing how much it was going to fix to make that old thing work again.Speed has never been a problem, it's reliability. You may not notice it, your area might even be perfect. Every area is going to be different but the NBN didn't do a nationwide halt on all HFC connections for a year for no reason, it's because it had severe stability and usability problems and they only just resumed sales back in December but it's still far from what I'd consider reliable.
I use things like smart bulbs, so every single disconnect is a pain in the arse and noticeable, if you're not on the Internet all day you may not notice dropouts or you might be lucky and have a rock solid connection. I use my Internet for work so it's pretty fucking annoying when it drop outs. I can't do my job properly without Internet and have to rely on 4G hotspots.
But again, mileage will definitely vary area to area. It's an issue with HFC, not the NBN retailers, they have no control over the network or its reliability, they do have control over the speed though. Without getting too technical, Telstra Cable had a wider spectrum to work with than what the NBN has and until the entire Telstra Cable network is decommissioned so the NBN can take over the entire available spectrum, it's not going to be as reliable as what Telstra cable was.
If I had the option of rolling back to Telstra cable I would in a heart beat.
They canned it... Optus laughing all the way to the bank.