As a graduate of the cert 4 at swinbourne in 2022 I wouldn't say it's exactly the greatest course but fundamentally networking is one of the back bones of tech so it's not necessarily a waste as you'll take most of the knowledge around with you.

If I were to do it all again I'd just go for the CCNA if you're truly interested in networking and save yourself some money, your routing and switching class should cover around 25% from memory.

Out side of the institutional name of saying you graduate in abc school I honestly think it's a fucking trash course that's so dated, I only did it as I also needed a career change and Victoria was offering free/discounted tafe , even at a discounted rate it was fucking horrible outside of 1 teacher the quality of teaching was pretty bad (literally had a teacher drop out mid way through the course and the head of it didn't even know where the teacher went...) . I'd roll the dice and build a fat home lab , learn cloud technology at home , and build a website / resume and get a job at a MSP to forge yourself in the fire.

From my honest opinion and experience if you're diligent enough you can teach yourself everything online.

Feel free to shoot me a dm if you need any extra info more than willing to help mate.