Buddhism revivalism or Protestantism? Horse hockey. I dont think the two can be mentioned in the same sentence.
I don't use the term Protestant to club together various non-orthodoxy Christian groups as the various groups there are too diverse in beliefs - from Lutherans all the way to Oneness Pentecostals (who reject the Trinity) and even the Universal Unitarians were an early offshoot (pre-Anabaptist).
It is far better to address Baptists as Baptists, Methodists as methodists etc and respect their differences in beliefs
Otherwise the umbrella term can become so wide that it could even be used as in this article.