Man the manhaj of salaf or Ahlu Sunnah always existed in the muslim world there's no need for an outside help to spread that aqeeda since the saying of the salaf always existed in islamic libraries and it's free for anyone who get's into Islamic studies to read it.Bro that’s cap, it’s well known that Saudi Arabia (with financial and logistical backing from the US) propagated austere Islam to Muslim countries in order to fight communism during the Cold War.
Wahhabism has always been a soft power tool for the Al-Saud family since Abdelwahaab was alive.