john barnes overcomplicates what he is saying so people miss it.
he says to focus on the systemic stuff over the symbolic or niche stuff.
which in the aggregate and in terms of the total effect on daily lives makes sense.
he is saying we need to fix our systems (education, media, socialisation etc) rather than trying to focus on ridding football (or any one similar area of life) of racism.
because as long as the societal influences are there making racists as they grow up you can never get rid of racism in football (and other selected areas).
he is proposing a "batting for the fences" approach which some might think is overambitious and unrealistic.