What the heck is an action verb?

Here’s an interesting post on transitive verbs by the website Grammar Bytes. The author, Prof. Robin L Simmons, says that:

A transitive verb has two characteristics. First, it is an action verb, expressing a doable activity like kick, want, paint, write, eat, clean, etc. Second, it must have a direct object, something or someone who receives the action of the verb.

That first characteristic is news to me, especially since five of those six verbs can also be intransitive (kick, paint, write, eat and clean). But let’s back up a second. A transitive verb is indeed a verb that requires an object. So want is a transitive verb because we can’t just say I want. We have to say I want (something).

But why does a transitive verb also have to be an “action verb”? Lose is a transitive verb in the sentence I lost my keys, but can we say that I’m doing something by losing my keys? Or that losing my keys is some “doable activity”? Another example is have in the sentence He has an inheritance. Not really something he’s done, no action undertaken by him, he just has that inheritance. Or how about I don’t have many clothes? The verb have doesn’t sound very action-packed in that sentence, but it’s still transitive. I’m starting to think that maybe “action verb” is not a very useful grammar term. Some more action-free transitive verbs (underlined):

Lord, it’s the same old tune, fiddle and guitar. Rhinestone suits and new shiny cars, it’s been the same way for years. We need a change.

This type of shit happens all the time. You got to get yours but, fool, I got to get mine.

I float like gravity, never had a cavity, got more rhymes than the Wayans’ got family.

If everybody had an ocean across the USA, then everybody’d be surfing like California.