"So sometimes I upvote just as a sign of "I see you"."
I can say from experienced that it is much appreciated to be upvoted by a witness. I agree with everything you are saying. I also reward every thoughtful comment on my posts with an upvote. I try to be a good wolf and to feed as many as I can.
I even take it a step further and often to to "introduceyourself" and try to follow and upvote baby good wolves who are new to the site.