It took DropBox about a year after publishing the video before they had a launched product that the general public could use.

I used to be similarly uncomfortable about the "publish a fake product before you've actually built it" tactic. But I've since signed up for 3 products that didn't actually exist at the time - DropBox, RescueTime, and some analytics SaaS done by ex-Googlers - and each time my emotion was more mild annoyance rather than harsh anger. Heck, there's a whole industry (crowdfunding) now based around the idea of selling a product that doesn't exist yet and then using the money to fund development & manufacturing.

This is also not a new tactic - in the 80s, it was common for enterprise software companies to find an initial company, sell them the product, and then use the money to build the product. Microsoft did this with DOS - they sold IBM an operating system that didn't exist and then used the money to find someone who had written an OS for the 8088 and buy it from them.

Crowdfunding works because you already know you are helping bring on a cool product that would not exist otherwise (and are aware of the risk that it might not pan out anyways).

Being asked politely and in an upfront way makes all the difference.

Arguing over nomenclature probably doesn't really matter. There's no one-way™. The video validates that there's need, drew already had a prototype that worked. I think a lot of time just build it all at the same time.

Nobody's ever going to fully externally validate an idea for you ahead of time. Just keep building until it seems like it's boring / you're poor / it has no potential. Don't go off and do it by yourself (without growth / people using it) if you want to build a real startup and not an art project.

I think a lot of times people are looking for an excuse to not build the thing they really want to build. Just build something cool, don't worry if it's an MVP or prototype or whatever. You don't normally have to talk to other people about MVP or prototype because talking about it is usually fake work.

Terminology-wise, a video is definitely not an MVP, unless you are a company that sells videos.

Well, if I'm remembering properly, MVP was originally designating the minimal thing that people were willing to pay money for. Add in kickstarter, and tada. You've essentially got people giving you money for the video (and a future promise)