but it feels like that third person is categorizing the idea and dismissing it, instead of dealing with my arguments outright.
This comment could be (but not necessarily is) valid with the meaning of "Your arguments are part of a well-established set of arguments and counter-arguments, so there is no point in going through them once again. Either go meta or produce a novel argument.".
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.