It would be lovely if everyone who sold anything anywhere gave excellent value but we all know that is not the case whether it is food, logos, houses etc. It isn’t right that people say they will do a high quality, unique design when what they do is a template customization. However, policing this would be a really tough job so it falls back to the buyer to assess what they are buying and who they are buying it from.
I think the majority of logo designers I have seen on Fiverr do ok, template designs which are cheap and suitable for a blog or something like that. Someone can create 1000 of those, get great reviews (because they deliver what they said they would) and then get TRS but this does not mean they will then suddenly be able to create an amazing, unique logo which encapsulates everything about the business it is representing - it just doesnt work like that.
When choosing a seller, any seller who does not talk about doing hand sketched or rough drafts, concepts etc initially makes me think that they are working off templates. Might not always be the case but it makes logical sense to me.
Why on earth would someone create a complete logo without checking if the client likes the idea first? If the initial concept is wrong then you have only spent 10-15 minutes (?) on it. If you complete the logo before the buyer sees it, then you have to go right back to the start.