No, we should not.
It is true that we are more lax on comments around here, but such "answers" can neither be commented upon (without creating massive comment discussions), nor downvoted if necessary. Moreover, they are completely outside the normal review process, and normal flags are not applicable to them. More importantly, this is not what comments are for. Comments are for requesting more information and suggesting improvements, not answering the question.
I'm not immune, I've also posted similar comments in the past, this is not a good excuse to avoid improvement.
If you have an answer, please post it as such. If you don't have time to post a full answer, post it later, we are not StackOverflow, a few hours delay in posting an answer is not the end of the world.
Moreover, I cannot see what would make Aviation special and a place where such comments would be somehow beneficial, as far as I can see, there is not a single SE site that accepts them.
And to conclude, you can see from this meta post on a sister site that community managers are actively deleting them and asking not to have such kind of comments, I do not see any reason for which to go against the site administration.