Your comment history seems to be mostly 1s, so I'm guessing a passing philanthropist has taken matters into their own hands. But for what it's worth, the most

Your comment history seems to be mostly 1s, so I'm guessing a passing philanthropist has taken matters into their own hands. But for what it's worth, the most likely explanation for a small number of downvotes on each of many comments by a single person, including apparently innocuous or unremarkable comments, is one or two individuals holding a grudge and expressing such by mass downvoting. I've had that happen to me on another site, before an (extremely unamused) admin intervened. I seem to recall, but can't find a reference, that abuse of the voting system in that manner is actually monitored by the site admins here.