The point is that DO incentivizes "do something which takes time from maintainers, without bringing them value" GitHub fundamentally has some mechanisms which

The point is that DO incentivizes "do something which takes time from maintainers, without bringing them value" GitHub fundamentally has some mechanisms which incentivizes some "useless" PRs especially to popular projects ("see, I contributed to $popular_project") while it directly adds the metrics ("oh, just one line changed") where most people quickly learn that there is no point in those. Mind that looking at PRs is not a short thing. Usually I try to follow up with folks who send partially useful things to learn about users and maybe get them to contribute repeatedly. I won't expect anything from Hacktoberfest spamers.