Not true... with salted encrypted passwords you're trying to find a password that the application will think is the correct one. It concatenates the salt with the password and checks whether the hashes match (simplified explanation, but that is what many implementations such as crypt do). That means you're trying to find a collision where the salt is at the start of the input that causes the collision. That's a small subset of the inputs that generate the same hash so it does make finding collisions harder.

The guy's completely ignored context though.

What about school/college university terms breaking up? They all break up for spring break and christmas.

I expect more people round those times were blogging things like 'I can't wait until we break up for christmas'' than were saying they were dumped. Which makes the entire chart meaningless.

I think he means the USB 3.0 trident logo:

http://en.wikipedia.org/wiki/File:USB_3.0_Icon.svg