After thinking about it for a bit, I decided that Elmund does not have a fanclub. What he does have, however, is an audience amongst baseliners.
His baseliner audiences are members of the academia, defense contractor engineers, Federation Tourism Board marketing division personnel, coffee aficionados, fans of pulp fiction and really, really bored Federation youths who love trolling Minmatar on the Galnet.
Members of academia who tune into whatever Elmund is saying typically are students of technical schools and universities, particularly those who major in Starship Engineering, since every so often he says something really relevant to their studies and they will start taking notes. There are also anthropologists who will record his posts about Minmatar, or rather, Sebiestor culture, taking note of the deviations from the Sebiestor norms within the Egivand Clan for use as case study of what happens when a branch of a Tribe deviates from the main body sufficiently enough.
Defense contractor engineers are interested in what he has to say due to his own background as a Marine Combat Engineer (Elmund performed two roles on the Typhoon he was stationed during his cadet days. His other role is Marine Engineer, as in, during the stoker work, fixing broken machinery, reactor control systems, electronics, etc). He occasionally mentions about how he goes around screwing with ship subsystems and weaponising starship architecture and electronics and they take notes and then study what he has to say, verify the truthfulness of his statements and figure out how to defend or exploit the 'facts' he revealed about boarding action and surface operations (particularly on demolitions and fortifications).
Elmund has a habit of talking about the places he visits, and he talks the most about the Federation. This caught the attention of the marketing arm of the Federation Tourism Board, and they keep track of his activities and read his posts to figure out what his beef with the Federation is, and then decide on how they are to make the subject he talks about into a better tourist trap, set up new tourist traps or scrap the idea completely.
Coffee aficionados because, well, Elmund takes his coffee seriously and has the tendency of going into rants about the quality of coffee of certain shops, much to the delight and amusement of these people. They also note about the places he stated serve good coffee, because, as it turns out, when he praise the coffee, the coffee turns out to be cut above the rest in terms of flavour.
His privateering activities and planetside skullduggery caught the imaginations of the pulp fiction fans, who felt that his adventures, when he does have any, read like something out of their favourite magazine short stories. The fact that one of his adventures does get featured in a pulp fiction magazine helps matters. There is also that novelty of 'one of us' (Elmund does read pulp fiction) too.
He also attract the attention of trolls because the guy tends to go into ranting fits about misrepresentation of the Minmatar in popular fiction.