>He can't drive stick
This is the only thing on this list that actually determines whether you're an auto enthusiast or not, you don't even need to own one, you should just know how
>He can't do a head swap
Fixing cars =/= auto enthusiasm. Drivers don't fix, fixers don't drive
>he takes his car to the shop
See previous
>He can't drop a tranny and change a clutch on jackstands
See above
Also, this is incredibly difficult for most people, and as long as you don't take your car to the dealership it's not super expensive
>He can't diagnose his own problems
Half agree with this. As an auto enthusiast, you should be able to diagnose worn clutches, oil changes, fluid changes, and most serious repairs. But the minor stuff is pretty difficult, like tie rod ends, or pinion seals, a lot of steering related stuff is pretty difficult to diagnose without actually looking at the part
>he doesn't own an engine hoist or heavy duty floor jack
Engine hoist is understandable, everyone should own a good floor jack though
>He's never had a head gasket leak after spending a day putting it together
Head gasket shit is difficult, I wouldn't be surprised if 99.9% of auto enthusiasts have ever had this issue.
>he doesn't own a loud v8 with at least 350whp
I think everyone should own a performance v8 at least once in their life, but not everyone needs to own one yet. a 17 year old can be considered an auto enthusiast but I sure as hell don't want a 17 year old auto enthusiast owning a 350hp v8