Earlier quoted context omitted.
If someone objectively screwed up a published study, there's no room for feelings or social consideration. People might be wasting their precious time and money pursuing impossible goals based on the incorrect study. Let's say someone finds a mistake in a math paper. Do they politely ask the author to fix it? What happens if the author ignores them? The scientific community doesn't have time to coddle and pursue ever…
It's not coddling as much as professional courtesy. Mistakes are often brought up at conferences and in peer review, but most scientists within a specific research area try to be on good terms with one another and don't see value in publicly shaming colleagues for their mistakes.
Use a bot to find tons of mistakes automatically and risk coming across as rude.
Or
Let social trivialities dominate scientific discourse and let most of those mistakes go unchecked forever because there's no feasible way to "politely" address hundreds of authors who made mistakes and keep checking back to make sure they actually fixed the mistake.
The former is clearly the preferable choice. Some individual scientists will suffer for it, but the scientific community as a whole will benefit greatly.