In the private Tabletalk interviews Hitler talked about his deep Christian beliefs, which he had always talked about publicly. He wanted to create a German National Christian church in the same model that England has its own national Christian Church with the King as the head. (Anglicans).
If Hitler wasn't Christian, then British Anglicans (the majority of all Christians in Britain and North Ireland) aren't Christian either.
If he wanted to create a national "church" then it would have been a church to use as a tool/organization, and he was still not a christian. Which would still be the attempted destruction of the church.
Building a German National Church so that German Christians would be free to practice their faith outside of foreign control is the opposite of destroying the church. Henry VIII didn't destroy the church.
Anglicans exist. George Bush Senior is a Christian.
Hitler was following the teachings of Martin Luther, the founder of Protestism.
I quoted Martin Luther. "We are at fault for not killing them." Was Martin Luther a Christian?
Hitler said he wanted to create a church in the model of the Church of England. He couldn't have been more clear. Wanting to create a Church of Germany exactly like Church of England isn't destroying a church.
Anglicans are Christians despite being members of the Church of England. Henry VIII didn't destroy Christianity in England.