It is believable. But it being a problem I don't see. If it's off-topic, that's sad for you but no reason to feel angry or it being "hostile" or something. It's just off-topic. Same if I started posting lots of local news from my city to HN. It's simply just off-topic and not what the site should contain. If it's already answered, being pointed to that answer by someone spending the time to digging it up is also not rude. Sure, you may feel bad because you feel someone "reprimanded" you or something. But that's on you.