I think it's because it doesn't give the deep state enough time to catch on.

We will because we're already on top of these things & know who to watch, just watching & waiting for it. DS is likely paranoid & has no idea who's Q & who isn't, so they watch everybody, which spreads their resources & ability to take up comms info thin. We can also figure stuff out faster, even if deleted, since we are more likely to capture & archive comms & since Anons have been following Q & been in the game for longer. But deep state will have no reference & then have to wait until after we figure the specific comms out & post publicly (since they are too stupid & surrounded to figure it out themselves).

I've always suspected that the things they want the DS to know (along with us), they will leave up, but they things they want to tell us without the DS catching on right away, they will delete. Causes a delay for the deep state & a delay in action on their part as a result as well.