It’s a mere incorrect word usage. The correct word for what Trayvonn was to Zimmerman while he was following him is “subject”, not suspect.
That a non-police watch person might say suspect when the correct term was subject is not at all surprising nor incriminating.
I take it that your “he’s toast” was said sarcastically...
Sounds to me as if they’re laying the groundwork for the “Zimmerman is a cop wannabe” smear.
It’s worth pointing out, by the way, that at this point in time, Zimmerman still didn’t have any reason to believe that Trayvon wasn’t exactly what he had suspected he might be when he began keeping an eye on him.
That is correct --
Even calling him the "suspect" -- what's the big deal??? He had just assaulted him and beat him within an inch of his life. What should he have called him -- the assailant???