I think lesbians have to at least consider what Buttigieg brings to the table as a gay man, which could potentially open doors for lesbians, but I think that's just one of many considerations, and I tend to think one-issue voters sometimes get behind a candidate that isn't great in other areas. Case in point -- pro-life voters. They see being anti-abortion as a "defining issue," so they tend to get behind less-than-savory candidates because they don't consider the person's agenda in other areas.
So yeah, I can see lesbians and all LBGT voters taking a look at Buttigieg, but I hope they vote for the candidate who best represents their interests in many areas.
As for me, a straight, slightly conservative women -- Buttigieg grates on my nerves by playing the religion card. I don't care for people who do that.