@GoldenOmber
There is some suggestion that it might do some damage in some circumstances, with a dose effect indicated. But the popular media and forum and popular culture claims that all screens must be avoided at all times are not well-founded in evidence.
So to cut to the chase - to avoid getting bogged down in ever finer points (and yes I understand and have read everything you've posted, but I too have work to be getting on with), your 'takeaway' from that review is that screen time is not necessarily damaging for young children, and you think that, having read that review, it's OK to leave it up to individual families to decide how much screen time their children should have?
Because the reality is - as you see on this thread and in real life - what is happening in practice is one-year-olds - babies - being given tablets, parents relying for hours at a time on screens to babysit their children, and that is OK because it doesn't necessarily do major damage to every child every time?
Even though there is evidence that it is indeed associated (strongly) with obesity and despression, (moderately) with poor diet and poor quality of life, and (weakly) with behaviour problems, anxiety, hyperactivity and inattention, poorer self-esteem, poorer well-being and poorer psychosocial health, metabolic syndrome, poorer cardiorespiratory fitness, poorer cognitive development and lower educational attainments and poor sleep outcomes.
And what it will mean in practice to tell parents "hey, you know best" is that the parents who lack the resources to manage their children for whatever reasons (educational, time, money, psychological, emotional, whatever) are the ones most likely to have their kids glued to screens, thus giving them an even worse start in life, and disadvantaging them even more relative to their peers.
Because on a societal level, it's actually much easier to tell parents that it's basically fine to stick their young kids in front of screens, even when we have good evidence that it's not, rather than to provide any kind of support, training, or instruction that will help parents to bring up their children in a way that doesn't directly damage their brains, bodies and life opportunities, pretty much from birth.