Exactly. It started when Bush the Younger managed to unify the Christian Right after the Clinton years.
As the Liberal-Left of the USA has become increasingly extremist, in part folloeing the race-worship up to and after Obama's election, the rise of mass social media and the resulting explosion of 'wokeness', so did "MAGA" coalesce in return.
MAGA is just a mirror to the US Liberal-Progressive establishment cultism.