Firstly, I absolutely hate that the US gets a free pass on everything and im sick of leaders refusing to blame Trump for this shit show for fear of reprisal.
That said, I genuinely feel like piracy is a more apt description of the Somalia's behavior, where it isn't really for the US.
Are the Somalis acting on government orders?
Is there any question that their behavior is illegal?
Is the primary motivation of those boarding the boat their own self enrichment?
I would very much like to see Trump held accountable for this shit show but I think this particular angle is pretty thin.
This is very obviously an argument of semantics.
These countries are at war, even if the US doesn't want to admit that. In a theatre of war combatants "board" ships and "comandeer" them.
Nothing stopping you calling it hijacking if thats your thing but its very obviously a heavy handed attempt at emotive language. It identifies you as a pariah rather than changing the perception of the US navy's behavior.