I have also argued previously for a like button or something similar, like the counted thumbs-up.
It annoys me when I really like/agree with a post that I have just read, then discover that there have been many more posts after it. It means that if I want to briefly express my agreement by saying "great post" or "I agree", I can't, as it could refer to any of the posts already made. Instead, I have to copy and paste the relevant post and re-format it in order for my brief comment to have any meaning. Far too time-consuming!
Maybe the Gransnet elves think we oldies have nothing better to do with our time, or that it is too complicated for us - casual ageism?