Viability of Des O Neil practise tests in 2023

I have heard quite a lot of people giving high praise for the quality of Des O Neil's materials in regard to GAMSAT preparation. However given the practice tests were first made in 2014, it is also in many regards dated compared to the GAMSAT test today which is more based on critical thinking and logical reasoning, rather than the reliance on theory alone as seen in the past tests. I am wondering whether Des O Neil's practice tests are still worth doing for GAMSAT preparation in 2023.