Why do men think it's ok to ignorantly "support" s?

So there are men out there who think they can be LGBT friendly by saying that they love s only and think the rest of the community is stupid or weird. I just hate those type of men and think they are completely ignorant. Yet it's always on television where a group of guys think it's ok to say "i love s", when they are only interested in seeing two women together but not actually be in love. Anyone else feel this way? This is one of the reasons why I would feel uncomfortable doing pda with my female partner.