How many people even maje a poll?
well look up in the top corner and click/tap on the thread tools button, than just chose add/edit your poll
even for those who don't know how to add a poll they can either ask how or did maybe a staff member will add 1 if you request it because it is broken for you
as for the suggestion I personally feel like a disagree button might get out of hand due to people just constantly saying no or on threads with titles that seem to be something that would be bad (an example of this would be my thread which had /report in the title people would disagree while assuming what the thread is about) but the difference with polls is you can also say "read the thread before you vote, the suggestion is probably not what you think it is" also there is the possibility of people just disagreeing on every thread for no reason at all (yes I know you could argue polls allow the same thing but a poll isn't required for a suggestion to have)
if there is no poll but you don't want to be notified by the thread
you can just ignore all the players who may post on it you can just post your opinion than go to the top of the page and hit the "unwatch thread" button
I personally find that since this could be a problem
Disagree buttons will extend to induvidual replies as well
about the issue of people being able to go on a bunch of threads and just hit that on all of them, they can now also do it on all the replies