In my case, it's mostly a matter of browsing HN late at night, so I come in late to most discussions and usually don't have anything to add that hasn't already

In my case, it's mostly a matter of browsing HN late at night, so I come in late to most discussions and usually don't have anything to add that hasn't already been said. Replying with "I agree" doesn't exactly add to the conversation, so I just upvote and move on. I've never felt any sort of discrimination on HN, or in the industry in general. There was one occasion (working on a contract at a young startup) where I felt out of place, but it wasn't intentional alienation, just different interests/priorities, and it had as much to do with age as it was gender. I had probably 10yrs on almost everyone else there and was just at a different point in my life.