I suspect that they will have already identified RC and Episcopal CONGREGATIONS which are more BIBLICAL in thought, teaching and practice vs buying into and supporting the globalist one religion fits all idiocies.
There are a lot of liberal congregations in the traditional denominations. Those they will leave alone for a long time as such congregations help their cause.
The left began their full-blown assault on the Anglicans/Episcopalians about 30 years ago (ordination of women, openly homosexual clergy, etc.) and I think they did this because they viewed the Anglican Communion as a “test case” for the main war against Catholics.
From what I can tell, they are now using the global warming hoax to determine which Evangelical groups might be vulnerable.