It does sound as if the nature of Eastercon has been misunderstood. US writers in particular seem to be confused that it's not regarded as an occasion for 'marketing' in the way that (say) ComicCon is.

I personally find her work intriguing and would have thought that she would have much to contribute on 'alternate universes' and historical resonances.

Given the GOH this year that sort of work is particularly relevant.