If you want an image of the moon with detail.. real detail, then don't even think about a 200-600mm f/5.6-8 Ebay lens, you need something of higher quality.
This could simply be a Sigma 150-500mm, or 50-500mm, or a Tamron 70-200 + 2xTC, or better yet a Nikon/Canon 600mm f/4 or whatever else is financially attainable.
Simple fact is that a better quality product will give a better quality result. In general a better quality product simply costs more than the lower quality products.
Nowhere does it state that to get good results you need top shelf first party manufacturer gear!!
Any notion that this was said in the quote, is an interpretation by others!
I'll use Lance's example image here, and we'll try to compare it to an image captured with the use a cheap $125 300-1000mm f/5.6-f/11 lens sourced from ebay .. use your imagination!
We've all seen the posts, a million times over(well I have at least) ...
"should I get one of these 100-1000mm f/5.6-f/16 lenses on ebay selling for $99 with free postage" ... etc, etc ..... and the resounding consensus is always no! Why? Because we know, with 99.9% certainty, that this lens is bound to be rubbish and not even useful as a doorstop.
Nikon haven't said that you need to spend up big money on their gear to effect better quality images. This train of thought is an interpretation of the quote by someone and then the rest of simply hopped up onto the bandwagon and followed suit, simply because it's
multination corporation bashing. And we all love cutting down those tall poppies!
For a given brief the photographer should have access to the right tools for the job to produce images effectively and efficiently. If not there is a very low probability that they will be able to produce repeatable results. We all know this, and we all seem to aspire to bigger grander and higher quality lenses and cameras to achieve our aims.
And yet, when the large multinational corporation says this, puts it down on 'paper' they get flak for it!!