I haven't seen LinusTech. But I do think if Ali was just around people who he was having fun with, his vlogs would be more watchable. The Monaco vlog is a good example of how even being in a great setting to make an interesting vlog, you can end up making a really boring vlog because it seemed unrelatable and like an informercial for himself about how cool he is being in Monaco. Whereas a vlog like the vagabrothers did in Monaco shows that being relatable to your audience and having fun in your videos makes the vlogs watchable.He needs to be making far, far more content if he wants to justify having a "team" around him.
Look at LinusTechTips. Obviously was a personal channel at first but its branched out into being one of the biggest tech channels on Youtube, bringing out multiple videos per week on many channels. There is tangible and visible growth there and I don't doubt every team member pulls their weight - it's not just a channel about Linus any more and lots of the other people on the channel are personalities and stars in their own right.
Ali's personal brand is very attached to him though. Angus and his other hanger ons will most likely make their own channels and try to copy Ali's formula when really he should try to be keeping them in his network.
That's why it is going to fail.