In your opinion, what would you say a low effort post really is?

I could copy and paste a thousand posts here to answer this question, but I think you know exactly what it is.

Personally, it wouldn't be such a big deal if you withdrew rewards from the concept — at least, even if it's for a little while just so you could fish out the sincere members of the community.

I had this thought myself - it would show who is there genuinely for engagement.

On an average, I'd say I spend about 2 hours working on each of my entry. That includes...[I edited out your list from the quote]

It shows that you do this, spend the time to make sure it's right. That's what I call effort.