I was a bit baffled by your post because it seemed odd, but it's the second time today I've encountered someone mentioning it. It appears that lemmy.today is a no-dv instance; I presume it's a server switch option. The rest of the instances I'm on all have up/down voting, and kbin, of course, has boost/up/down. Not that there's anything wrong with it but, just so you know, it's a feature of your instance and not lemmy-wide.