What is the risk you are running then?
I’ve read through the only research link provided on this thread and there is nothing wrong with it as a piece of research but it does not demonstrate “tv is bad for your children in the morning” - quite the contrary as the authors themselves point out.
Over the years I’ve seen a lot of poorly researched “facts” become unquestioned facts as they filter through to schools, often with the aid of someone making money at the other end (such as some well known reading schemes, behaviour policy schemes, maths schemes, sex education schemes) and this has become much worse over the past 20 years as every school functions under budget, under time and with one eye over the shoulder to social media attacks.
The evidence that “tv before school” is bad for all children or even most children has not yet been posted to this thread and most of what I’ve found talks about “excessive tv overall” and in homes where parent child communication is already poor or where children have pre-existing language and learning issues.
TV before school was never my thing because (selfishly) I can’t stand it first thing in the morning. If I (selfishly) had found it useful I would have used it, since there was no evidence that it was more harmful than other activities before school.
I could of course have told them to play with their “thoughtful and beautifully hand carved model animals and cars” as recommended by MN but my plebian DC preferred plastic tat in the toy cupboard.
As per pp - if I’d told them to read I’d never have dragged them out of the door.