It must be a student visa and then possibly a work permit? not sure if he mentioned that at all. I do know that he chose to just stay with Temporary Protected Status after the green card status. What I don't get is he says in the video he's employed. Couldn't he just get a work permit residency?
That said he seems to have done everything legally, and is even going back to Venezuela

of his own free will. It doesn't feel right, but I can't say he didn't bring some of this upon himself
If he went for the TPS its probably because he overstayed some visa, tourist or student. Or he never introduced the necessary paper work to request asylum or start the process of permanent residency, I suspect he's a lazy Zambo, our version of a nigger. He's choosing to self-deport because he can return to the US later, legally.
He might not have done everything legally. Like I said, I suspect he overstayed some visa, I also find very suspect he didn't started any sort of process to regularize his status in the US. The people that I know that have years (+8 years) in the US have all either started the process to become a permanent resident or had their asylum request started and approved. I suspect that not all those requests were legitimate.
Until not so long ago, you could pay a few thousand of dollars to some government officials here and they could manufacture a valid "political persecution" case for you, with all the required "evidence" to validate it. People then would just present it to any foreign official in charge of those affairs and it would get approved, because for all intents and purposes it was a legitimate persecuted person, nevermind that this person payed out an amount of money to become one.
I also remember the whole fiasco with humanitarian parole and the sponsorship program, it was essentially a way for people (usually other Venezuelans) to sponsor someone else to go the US, you had to provide proof that you had enough financial means to support these people, the catch was that you could sent the necessary amount of money (a few thousand dollars) to your "sponsor" and this person suddenly had the means to support you, even though they used to be a broke nigga.
Also, some of my countrymen claim to be "legal and have done everything by the book" when, in truth, they simply went to the US. overstayed some visa and while they might (or not) have started their regularization process they have never follow up on it. I know more than a few people like that.
As for the TPS, I have a funny/tragic story from a few years ago, I know a guy that went through the Darien and all way through Central America with his wife, two kids and in-laws. He sold his house, his two cars, business and everything else to pay off the people smugglers so they could get him and his family to the US. I think he had something close to 30-40k. I told him that it was not worthy to expose his family to such dangers, that he had enough money to go somewhere else, legally, and get a good head start, he still went to the US.
Last I knew he got arrested and was in the process of getting deported, no clue as to his wife and children, I think they got separated not too long after they got into the US. No clue either as to what happen with his in-laws.
TL;DR: Nigger overstayed some visa, was too lazy to start some process to normalize his stay in some other way. Getting into (and staying in) the US is a very profitable (and dirty) business.