It definitely seems that way, depending on what you are selling it is entirely appropriate.
Let's say you have something that you are selling and you tell buyers how your barely used (or not at all) item is just fabulous.
Buyers might wonder, if it's so great why are you selling it?
The answer might be "because I bought two but only ever use one" or "it's a great xxx but I'm selling it because I don't have space to store it" or "I thought it would work for me but it doesn't match well with my decor".
These suggestions for eBay are probably intended for casual sellers selling stuff they bought to use but never did or they found a similar items they prefer. Or perhaps they are selling something like a computer component they are selling at a relatively low price, buyers can be suspicious and wonder if maybe there is something wrong with it.
These suggestions from eBay are just that, suggestions and they might be helpful in place of a description that only says "great condition, see pictures". If you already know how to sell maybe you don't need eBay's suggestions but plenty of sellers here could use the help to create more attractive listings.
There is nothing wrong with trying to engage potential buyers, the longer they stay on your listing page the more likely they are to buy.
