One thing that started bugging me immediately upon using Gnus was the prompt for how many messages I wanted to load from my inbox when it had more than 200 messages in it. It turns out that this behaviour is controlled by
gnus-large-newsgroup, described as:
The number of articles which indicates a large newsgroup.
If the number of articles in a newsgroup is greater than this value, confirmation is required for selecting the newsgroup.
If it is nil, no confirmation is required.
So let's stop this right now:
(setq gnus-large-newsgroup nil)
Now I feel less like Gnus is judging me for the size of my inbox.