I up-voted your question early on. Thinking back I suspect I did so for some of the following reasons:
You introduced me to the name Larry Laudan. I am reading Marc Lange, but I am not familiar with all the the philosophers of science.
You introduced me to the concepts of "pessimistic meta-induction". That's a mouthful, but I'm glad to hear the term.
I can imagine some people might down-vote the question because they find it too broad or opinion based. I don't have an answer to the question, but I am interested in whatever answers might appear. So, I hope the question stays open until more answers are provided. And I hope people who know something about the question provide an answer.
It is possible that there is "personal dislike" behind the down-vote, but there is little one can do about that except to try to find a way to make the next question even more difficult for someone to down-vote. Look at it is as a challenge.
For what it's worth, I get down-voted for questions and answers that I consider to be perfect. Keep in mind that the person who actually down-voted paid a one-reputation cost to do so.
Regarding who down-voted, you can get a vague idea by looking at the "Users" link on the left panel and select "Voters" for the month or week: https://philosophy.stackexchange.com/users?tab=voters This only lists voters who voted 11 or more times, so not everyone is on this list, but if you see people with some reputation score for the month that is not divisible by 5, they were either down-voted or they did some down-voting. Then click on their profile. On the right is information when they were last seen. If they were not seen during the time of the down-vote, then they didn't do it.
In general it doesn't matter, but if you think there might be a "personal dislike", and you also think you know who that might be, it is good to resolve that for peace of mind.
I don't recommend doing anything about it. Just keep participating, posting and commenting the best you know how. Also keep in mind that you can edit and flag posts.