No I don't think there are bots here. Did you know there's a thing called "not liking a tweet".

I suspect that most of these votes are just people who don't really care much, they just pick yes or no and move on.

This is not a problem exclusive to Twitter. The same philosophy applies to anywhere else with public viewer statistics, for example, right here on Newgrounds. This is one of my own submissions here. Even though 388 people viewed this submission, only 89 people bothered to vote and 16 favourited.

Don't expect everyone who views this tweet to like and reply all the time, even if you did one of those "only a small percent actually subscribe" tricks that YouTubers like Dream pull.