That's not asymmetry. The lovers are also not really interested in discussion and are just as prone to pollute it with blind positivity as the haters are to do so with blind negativity.

The lovers, while possibly blinded, are at least interested in the details.

If you do not think somebody can think something's a bad idea and still be interested in "the details", I question what sort of world you live in.

You would do well to consider removing the word "haters" from your vocabulary. It's used solely by the unempathic, the childish, and the criticism-sensitive, and doesn't in any situation help.

They come and leave one line jokes. Very intellectual.