Why has extreme programming (XP) gone out of date in favor of Agile, Kanban etc?

Question

I like XP (extreme programming), especially the part where there are 2 programmers at the same screen, since a problem's solution is often found more quickly if only you explain what you're doing and pair programming forces you to explain what you're doing.

Over the last 10 years or so, the XP style of working seems to have gone out of date in favor of the working methodologies: Agile and/or Kanban. Why? Since XP seems to me to be a very good way to work and is a lot about the programming whereas Agile and Kanban are more about processes.