[paraphrased position 1]
Generally, if people abstained from doing edits that are just removing "thanks" and context phrasing (without doing any other improvements), that would be great. I perfectly understand the point of not cluttering questions with useless verbiage, but having someone actively enforcing the "no-thanks policy" on sight is incredibly rude -- and culturally insensitive to the point of becoming discriminatory.
The consensus has always been not to edit them out unless you're already editing the post, and then to take them out along with the other changes. That doesn't solve any of the interpersonal issues, in line with SE's usual practice, it just keeps pointless edits down.
[paraphrased position 2] Reviewers should approve any edit that improves the post. ANY. Removing thanks improves the post, and should be encouraged.
In earlier discussions, I saw "consensus" that edits that only remove "thanks" or "hi" were fine. At most, I remember (but cannot find) an answer from someone saying they would not make such an edit themselves, but did not see any harm in them.
Can we mark the current feeling of Unix & Linux SE here, in a dedicated post? The above discussions occurred on a question about something different, even if there was some overlap. If nothing else, it should be easier to find here.
terdon ♦ (a diamond moderator) was advocating against this type of edit.
I am not cultured enough myself to give evidence for all the statements in position 1. If you feel confident enough to contradict them, or you feel this is insulting you, please start from an assumption of good faith. I have posted my own argument as an answer, so you could respond to that argument if you find it preferable.