Why are sheriffs in florida able to locate random anonymous trolls on 4chan but can't find actual criminals or mass shooters?

I really don't care what you have ti say, sheriff chitwood issuing an arrest warrant for a 4chan troll 1200 miles away in New Jersey and putting him in a florida jail, this to me is police over reach, this is what they do in Canada or Australia or the EU. If this volusia-county sheriff, who went after the 38 year old guy he accuses of threatening him, had filed a warrant to the trans man shooter in Ashville Tennessee and had her arrested you wouldn't have 7 dead people yesterday.
Why are sheriffs in florida able to locate random anonymous trolls on 4chan but cant find actual criminals or mass shooters?
Why are sheriffs in florida able to locate random anonymous trolls on 4chan but can't find actual criminals or mass shooters?
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