I enjoy upvoting comments, in fact a whiile back I started to upvote comments with greater percentages but only with those who I have relationships or who add the three important elements of passion, personality and effort. So yeah, I agree with the below line you wrote.
would nullify one of the best part of Hive, i.e. rewarding meaningful and sincere engagement.
I always find your posts full of "real" comments, so it looks like your way of curating comments has already proved to be extremely valid.
Yep, I appreciate those "real comments" probably more than the people leaving them realise. Some are lazy in their responses and I see that clearly, but in the main most who comment on my posts are good folks.