I have a beef with Qantas regarding status credits. Having been a bronze frequent flyer for many years (I am in my late 70s) I can only hope to attain silver if I fly 10 times a year. Is this set up for business people?
No I attain Silver regularly with economy international travel once or twice a year with some domestic economy. Occasionally I fly business or premium economy. It is a frequent flyer program though and it rewards two things, flying more, or buying more expensive flights. Silver would only get you a single use lounge pass and the lounges are generally pretty packed as it is sometimes. So if everyone who earnt just 120 SC's a year got a lounge pass, it would get very packed. All frequent flyer programs are like this.
Also long term loyalty is rewarded through lifetime status, but at 100SC's a year you aren't going to get lifetime status.
My suggestion is to have a look at the fares when you book. Often the flex economy fare is not too expensive, that will earn more points.