When I post a-n-y-t-h-i-n-g on this Forum, it will be Downvoted within about 30 seconds of its posting.

Simply factually incorrect. A quick scan showed a couple of nodes that had been posted for hours and not received any down-votes.

objecting to them with such clockwork regularity.

There is no clockwork regularity. Indeed, there are so many monks who now at least somewhat frequently downvote many of your nodes that it is not easy to find a relatively recent (but not too recent) node of yours that didn't get at least a couple of down-votes. And, indeed, many of them appear to get downvoted fairly quickly.

So, is there, like, a bot at work here?

No, if there is a bot casting down-votes on your nodes, then it is not doing it very reliably or frequently. Many of your nodes are downvoted by disjoint subsets of monks. Some only by monks that I have personally met. To think that some significant subset of such a diverse set of monks is being orchestrated by some shadow conspirator(s) requires a penchant of ludicrous conspiracy theories that but 1 monk in 10,000 could achieve.

I can’t honestly believe that actual people are actually reading my posts and objecting to them

I obviously can't guarantee that all of the downvotes cast by humans were done after reading each posting. I suspect the majority of them are cast after at least scanning the posting.

But none of this should be particularly surprising to anybody who has been paying much attention.