It's probably a real bootloader. Its probably time to dust of my PS3. I haven't really used it at all since about two weeks after I got.
The reasons why its real:
1. Its from a reputable homebrew dev from the PSP community.
2. This is not a Nintendo Console. Those are always impossible to hack without using something like a modchip.
3. Paradox has already created a bootloader. As long as the dev creates another pseudoOS that basically works as a virtual drive on the GameOS it should technically work.
The reasons why it may be fake:
1. The loading took way too little time for ridge racers 7. That thing booted up in a matter of seconds it seems kinda ridiculous.
2. The video appears to be edited somewhat. Probably what happened is that the part where the loading occurs is fast forwarded.
Well anyway, thats my take on the subject.