I'm really not. You aren't a lawyer I realise from that post. We are talking EQUALITY legislation, not preferential treatment.
You don't seem to understand the difference between Positive Action and Positive Discrimination under the legislation.
Positive Action is lawful IF it falls within the remit of existing Equality Law. It's aim is to help those who have disadvantage in certain circumstances ( i.e evidence based) get to the same starting line for a job ( for example) as the majority group in that vocation.
After that it's up to them to prove themselves as able for the job as others.
Positive Discrimination is unlawful in England, Wales, NI and Scotland.
The Charity concerned is not a " black charity" as some are claiming. It runs initiatives to assist various groups who have disadvantage in particular areas compared to others not of that particular descriptor. There is no blanket prescription that Group A should be treated better at all times, and for all circumstances, than Group B.
This particular internship is within the law in NI, Wales, England and Scotand as the group it purports to assist is evidentially unrepresented in that area of employment.
Many decades ago, I was involved in the WISE initiative. Women Into Science and Engineering. Supported by the then Equal Opportunities Commission. To help support Women who were under represented in those particular professions. There wasn't one for Hairdressing, for example, as there wasn't a barrier to women working in that area.
A lot of men and some women, huffed "WISE wasn't fair".
What wasn't fair, was the under representation of good and able women who could not get into those areas of work as the drawbridge was pulled way up high, and they were not allowed access to compete for work on equal terms. Or Equal Pay, for that matter, when they did manage to gain employment.
Schemes like the present one, and for different groups facing disadvantage, have been around, to my memory, since the late 1970s. It's nothing new. Closing them down "as not fair" is part of a race to the bottom, along with trying to cancel sports initiatives, for instance, for cricket and football for girls.
It doesn't guarantee them a place playing for their national team, it does help hone skills and give them the experience they may not otherwise have had, and perhaps a chance to try for their local teams.