Azoiy,
let’s get to basics: Bava Basra praises R Yehoshua b’ Gamla for opening schools that were able to compensate for parents, not all of whom were able to teach children. Some read this Gemora to mean that parents teaching kids is still preferable where possible.
So, could now at least some parents teach kids at home? I think amount of time that last couple of generations were able to spend learning is way much than farmers during 2nd Temple had. We have more texts and videos than ever. Of course, challenges are different also, But, still – could some parents fulfill the mitzva of teaching their kids themselves? Did some try? what are results?