* We can't see votes so to make ascent of an opinion visible adding a "me too" is actually different to an upvote.
* We can't see who has upvoted.
* The commenters standing - recognised by name, work and reputation by many here I'd warrant - makes a difference too IMO.
Whilst "me too" comments get annoying they carry info here that is otherwise not available.
Yes, if "me too" posts are only added in rare cases by accounts which have a lot of influence, such as yours, it would follow the point you're both making but that's not the case. You post a "me too" and it sets an example for others to follow. Case in point https://news.ycombinator.com/item?id=5056927
Further more, "to make ascent of an opinion visible" isn't necessary because an ascent is visible by it's very nature. The best posts rise to the top. Up-vote a post and it'll make it's ascent.
This isn't meant to be a heavy nitpicking argument. Please take it as a lighthearted discussion.
There's nothing in the UI to show this; presumably the highest top-level comments are those with the most upvotes (!== best, yeah, nitpicking) but the algo is hidden. There is no identification of who is assenting either.
