The disclosure section in the cited research article may indicate a financial interest in the authors being able to say that Prozac is not effective:

“ MAH and JM are co-applicants on the RELEASE and RELEASE + trials in Australia, funded by the Medical Research Future Fund (MRFF) and the National Health and Medical Research Council (NHMRC), evaluating hyperbolic tapering of antidepressants against care as usual. MAH reports being a co-founder of and consultant to Outro Health, a digital clinic which provides support for patients in the US to help stop no longer needed antidepressant treatment using gradual, hyperbolic tapering; and receives royalties for the Maudsley Deprescribing Guidelines. JM receives royalties for books about psychiatric drugs, and was a co-applicant on the REDUCE trial, funded by the National Institute of Health Research, evaluating digital support for patients stopping long-term antidepressant treatment. MP and RL have no conflicts of interest to declare.”

I would caution those in this thread who have never seen or treated patients in any psychiatric clinic or hospital let alone a pediatric one to be careful assuming that they have adequate experience to make sweeping judgements on the utility of antidepressants in children.