I am going assume that "new board" is a reference to one of the aggregator sites, and not to the new board /patriotsfight/ at 8ch.net /patriotsfight/ didn't exist and does not have any posts before 5/4.
The aggregator sites are or aim to be a complete collection of posts attributed to Q. The plane pics, etc. from 4/28 to 5/4 all came on authenticated Q posts. FWIW, an authenticated Q-post would be required to set up a new Q tripcode.
It's possible, with a team of Q, that all of them knew the old password (which is hashed into a tripcode), but an errant Q on the team (who was posting from 4/28) was not made privy to the new password used to generate a new tripcode yesterday.
-- Corsi can go away he is still bent cause Q called him out for hocking his book all day. --
Well, coincidentally, the "Be careful who you are following" admonition was delivered on 4/29.
Dr Corsi is an old war-horse. He's plenty old enough to do his own thing and hang the details. His flaws and his strengths are likely well-entrenched, at this point.
I think he's doing an earnest job doing the more or less best he can see to do--to TRY and contribute to dealing with evil and the Dark State.
Of course he has strong opinions, at his age. He also has a lot of well connected sources from his long relationships with such stuff, involvement with such stuff.
I don't begrudge him trying to make money on his book. I don't begrudge him thanking people for donating to his efforts. I usually skip the first 5-10% or so of each of his videos.
Yes, he can have a lot of chaff on his videos. If so, I skip ahead 3-5-10 min worth at a time until I run into something of substance.
If you don't like Corsi--listen to Dustin Nemos, PrayingMedic et al. I have no need to throw public rocks at an old patriotic war-horse.