loads of us visit sites and volunteer, but we are not likely to if we don't feel welcome. If I see a rainbow lanyard or badge, it is a sign that the organisation and its people are welcoming to all.
Well, it doesn't say that to me at all, it says that the NT is more interested in virtue signalling.
Young people, LGB people, people with disabilities, people from BAME communities - many are interested in heritage and history, loads of us visit sites and volunteer, but we are not likely to if we don't feel welcome.
Has there ever been any indication that any person is not welcome? Surely information about one's race, colour, creed, sexual orientation, ability or otherwise is not demanded at the entrance before a person is allowed in? Or even on the application form if applying for membership, unlike applications for LA-run short courses of interest?
Neither would I expect NT staff to wear any badge whatsoever unless it is one to tell me that they are a NT guide and that they may be a mine of information on the house and its history including the people who have lived there.