I thought the normal idea was that a collection of papers about a prominent character would be given to some respectable public institution, which existed for other purposes, and that this colletion would be added to over the years, to include any relevant material - favourable or unfavourable.

The idea of free-standing institutions solely dedicated to an individual is pretty strange - but the idea that it should be picking the material it contains, in order to present a particular spin on that character (favourable or unfavourable), is just ridiculous and offensive.