Here's the thing. If you've played DOA and researched the game's history, you'll know that the sex appeal has been with the series since the first game. The game was made to make itself stand out from other 3D fighters at the time, so they took the breast physics from Fatal Fury (ahem, Mai) and applied it to the 3 girls in DOA1 and ta-da. Of course as graphics got better, the sex appeal of the series was more noticeable through better breast physics and more over the top costumes. However, a lot of people who got into DOA was because of the costumes, the over the top fighting, the sex appeal, whatever the case may be. The sex appeal is part of the DOA brand and identity, and it's something that we, as players in the community, should not be ashamed of at all!
Look at the Smash community for example. One could look at that game and just see a bunch of neckbeards playing with kiddy Nintendo characters and brush it off. However, while I don't consider the series competitive in the least bit, the community does support the game fully for what it is and the numbers do not lie. Two Smash games are on the EVO line up and the FGC takes that game more seriously than they do DOA, despite its kiddy appearance of Nintendo mascots. So the question is, if the Smash community can support their games despite their outer appearance, why can't the DOA community do the same? We shouldn't have to slut shame our series because many of us knew about the history of the game prior OR have been with the series long enough that the fan service isn't an issue to begin with.
Better yet, what is the FGC's aversion to fan service in fighting games anyway? Each fighting game has some type of fan service, but DOA is unapologetic about it. The people who have been playing this game long enough have become so used to the fan service and it's not even much of a concern at this point at all. To the casual on looker, they can make all the jokes they want, but most of those casual on lookers can't even perform a simple combo in the game, let alone understand the deep and complex metagame that DOA possess at a high level. As a community, it is our job to say, "Hey, we know this game has fan service, but we also know that beyond the fan service is a deep and complex 3D fighter that is very fun to play at a high and casual level. Let me show you why by teaching you how to play."
Basically, all I'm saying is, if you enjoy DOA for whatever reason, enjoy the game. Some people like the game because of the sex appeal, some people like it because of the over the top presentation, and we all like it because of the fighting game system that is both simple, yet deep once you go beyond the superficial surface of the scantly clad women. If people do not want to give DOA a chance because of the fan service, even if you teach them how to play, you cannot really do anything about it. The greater FGC will say it's perfectly fine to not want to play DOA because of the fan service, but will probably give a person a side eye for not wanting to play Smash because it looks too kiddy or for not wanting to play MKX because the blood and gore is too much. To that, I say screw the FGC, because I'm going to continue competing in this game at future tournaments because I love all aspects of DOA, fan service, fighting system, and all!