Signing a third QB to get ready for camp is hardly sending anyone a message. You didn't really think Johnson was the long term back-up, did you? They'll probaby add another camp body QB before they're done.
Not signing so-so OL for more than they're worth in FA is hardly a surprise either. Fulker is a good signing, and they will probably go after a lineman in the draft. That will represent a significant upgrade in the OL, especially if they can figure out what to do with Flowers. Hart is young and improving. Richburg had an off year; but you can expect him to come back better.
Coach saying that Eli has to play better was a poke at Eli; but what's he supposed to say, a low 80's QB rating is fine? Not likely.
If the Giants pick a QB early in the draft, that's news; but so far it's pretty much typical off season shuffling of personnel.