Oh, yes. Reality. It really comes down to motivations. For an outsider looking in, particularly an out of work manager, you could see several different things. They could view Villa as too much of a basket case, as not being masochistic enough to sup from this particular poison chalice, being too good for a struggling second division team, or, maybe, they see Villa as something to build, to leave their handprint on, and to potentially impart some form of legacy.
Villa is pretty much a reconditioned squad, and with the lack of effort from the current manager, still don't know how to play with each other. This makes me more inclined to lean towards a manager with international experience. Nation managers have to manage players from different countries, different leagues, and different teams over a short period of time, and don't have the luxury of being with them week in, week out. They come in from all over the planet, hang about for a week, play, then sod off back to where they came from, while the manager has to pick his best players and formulate the best tactics for the one or two games they play in that space of time.
As for reality, it is quite basic. Don't ask, you get nothing. Ask, and at least you got an answer.