Hi,
I help in OFF for some times now and I understand completly your feeling about this impression of always cleaning the data (love the Wall-E comparaison, by the way). But I can testify that a lot have change on this aspect and there is a lot of projects to help (like the “Data Quality Team” that @alex pointed out).
I understand that this feeling is sometime overwelming. It happened to me a few times. Moving on the Slack can help because you will see the great people behind OFF and the projects that we are working on. The discussion on the Slack help me to stay focus on some tasks that can be boring, like correcting errors on nutritionnal values. But this work have great result.
On another subject : thank you for this thread. I corrected some products (I put a like on every post that I checked).