people need to realize that swarming tactics were a theoretical desperate strategy of an Iran with 89s,90s capability.
Iran today has enough shore to sea missiles, surface to surface missiles. to absolutely anahilate not only the 5th fleet, but their base and host country in a couple of hours.
Smaller boats are used for Patrols, visibility, and possibly to capture and or finish off crippled american naval vessels in the persian gulf that have eaten missiles, mines, drones, suicide boats..... Iran is even experimenting with anti-ship ballistic missiles..... and super cavitating torpedos and mini subs
swarm a naval target with suicide drones, boats, and shower them with sea based anti-ship missiles. in a tiny lake called the Persian gulf, and see how long they last (not very long I assure you)
the US knows what a poor strategic situation they are in. thats they they ALWAYS choose to stand down when a conflcit with IRan starts...
it started with this:
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Brits
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The Americans stood down after Iran shot down their 500 million dollar stealth drone...
the Americans stood down after the Iranian military openly fired on their base in Iraq (something no nation has dared to do in peace time post ww2) and the US stood down...
When there was tension, the 5th fleet actually got out of the persian gulf, especially the carriers. the US knows how vulnerable they are... Iran would actually be sad to see them leave at this point to be honest.... they are absolute hostages.