Er, no? An emoji reaction for â+1â is available, and I guess you could mangle that into meaning +1 or âthank youâ in a lot of cases. However, itâs reasonable to assume that if people just want to give a âthumbs upâ reaction they will, since itâs less effort than actually writing a post to reply â+1â.
There are of course lots of short replies that simply arenât covered in the odd 9 reactions that we are allowed to use - â-1â being the most obvious missing one.