I won't open the can of worms the statement 'accident of birth' suggests - suffice to say it's not a statement I feel ought to be used when describing someone's colour.
My job deals with this kind of thing all the time. I work as a Lead Business Analyst, and am forever needing to challenge people's assumptions on what makes valid business sense because they highlight one or two bits of data and build a case around it. When we look at ALL the data, their assumptions do not always stand up. That's the problem with statistics, you can make an argument for anything (even leaving the EU

) but unless you get the full picture, you could be - at best - solving a problem that may well not exist, or worse, creating a problem that need not have been made.
The article does address some of that, but there are still gaps. Unless we get a really good picture as to why there are less applicants, and why the applicant's colour or finances do (or do not) have bearing, then it's going to be difficult to resolve unless you set universities targets and quotas - both of which being in a problem that's arguably worse than the one we may be looking at today. There'd also need to be an adjustment for geographical bias.
I'm not by any means saying that there
isn't a problem, just that we'd need to understand a lot more than we do now about why it may exist and what the aggregated causes are.