You are confusing things a little. If they act as if they do is going to give a reason enough for a search warrant yes but if a crime is committed is yet pending the execution of the search warrant and the appropriate findings. But again "acting as if they do" is also kinda murky. That "acting" needs to give enough to the judge for a reasonable suspicion in order to get an investigation going in the first place. Now with their recent arrest and findings in that household it's probably gonna be way easier than usual though to execute search warrants.
They posted screenshots online, claimed they were from Aaron's Google account, explained he had forgotten to log out, said they retrieved data from it.
All this was done by:
a) Nick, who is the defendant in two cases Aaron is a witness in AND who is a witness himself in a criminal case against Aaron for revenge Pornography which he and his wife initiated with a complaint
b) Melton, who made sexually harassing and demeaning comments about the 10yo daughter of Aaron (against whom a restraining order might or might not exist at this time)
Data and files they claim to have retrieved and threatened to share with the public, or claim to have already shared partly
a) Browser history (screenshot, legitimacy?!)
b) private videos and picture from Aaron's cloud (insinuating they retrieved nudes)
c) Access to home security cameras from Aaron's house (Melton having access to videos of Aaron's children?)
d) "so much more and worse" (as per Melton)
Data and files they would also have had access to.
a) Confidential communication between the state and a state witness in two cases against Nick (if the CHIPS case still exists, else its one)
b) Confidential communication between Aaron and his lawyer in the RP case that Nick is a witness in AGAINST Aaron
c) Confidential communication between Aaron, his lawyer and his ex-wife and step-father of his children, in regards to a potential restraining order and legal strategy against MELTON (who harassed Aaron's daughter, potentially in coordination with Nick to intimidate Aaron into not testifying)
If the above is not enough reason to get a search warrant for at least both the retard's electronic devices I would be very very surprised. Especially since timely execution matters, because at some point Melton will get scared and try to delete the evidence.
[EDIT] Fixed retard spelling errors.