To some extend, yes. But they must all contain certain specified elements:
- the context of the statement or statements in question;
- the reaction of the recipient or listeners; and
- whether the threat was conditional.
He made no offer to solicit anybody and there was no indication that anybody was going to act on his statement. If he actually was offering to pay to harm someone, that would be a more serious solicitation of murder charge (but this does not meet the conditions).
A threat has to be something you intend to do, you cannot make a threat on behalf of somebody else.
I understand what you are saying, but the law requires much more specific elements be present to be a true threat.