I think you're right, Mari. There are probably many people who would find it convenient due to their health.
I find it much easier to deal with now that there's just the button and no tallying of numbers displayed on the screen. I know it's probably difficult for people to understand, but that was really worrying me. I figured that once I pressed that thanks button once, then I'd feel the need to press it on everyone's posts because generally I'm thankful for almost everything that people post.