Has the gateway theory been put to rest?

I came across a report summarising some research completed recently on cannabis use in both the USA and Australia. The claim being made in the article is that the gateway theory has been well and truly refuted. In my time working with young people in particular I’ve never seen the gateway issue occur in any quantifiable way. I’ve certainly worked with people who jumped boots and all into the scene with their friends and progressed through a range of substances, but it never seemed to follow the traditional gateway interpretation. Anyone else like to share their experiences or have the debate on Drugtalk exhausted everyone 😉