Dealing with different teachings demonising each other

[Hello from Russia]

So i've been recently watching various videos from orthodox christian priests on yoga\enlightntnment for the sake of having a different perspective.
Mostly they all seem to be content when yoga is looked as just physical exercise and meditation as just some activity to "chill and calm the mind".
But when it is looked as spiritual tool to achieve enlightnment and the state of no-self they become irritated and demonize such thing. They actually realize  that succeeding in such virtue is equal to killing yourself (your notion of self), just as Leo describes it. But if Leo says that it is the EGO you're killing, they say it is the soul you're killing and once you do it you can no longer reconnect with God because you have no soul anymore and you don't exist. While Leo and this whole non-dual\yogic phylosophy sees it as a good thing, Christians see it as a bad thing. And that makes me very confused and wondering if Christians could be right.
Can this notion of self be not ego, but, really, our soul instead? What if killing it will make it impossible to really reconnect with God and we just disappear completely out of existance if we do that and that will actually be the bad thing? They equate it to deadly sin such as "Killing" because ur killing someone, in that case, "yourself"
Of course, in such line of thinking I tend to cling to the concept of myself (ego or soul, whatever you wanna call it) and this is usually seen as the wrong thing in all of this non-dual philosophy. But is it really the wrong thing? It can be my presious soul after all 

I noticed various religion leaders\teachers (Leo included) like to cherry pick evidence for their teachings from other religions. Leo sees non-dualism themes across almost all mystical traditions and cherry picks what supports his view while completely disregarding things that contradicts it calling it "nonsense" and that his non-dual experience made him be able to see that tnonsense and distinguish it from the reality.
These priests do pretty much the same. They pick concepts of God and concepts of connection to God that they like in other religions and what they don't like they demonize by saying it is the Devil's work and people who do it are worshipping the Devil.

What I found in myself and I think a lot of guys on this forum have it too is we tend to be very dogmatic and believe in things too easily. Especially in stuff that Leo talks about. Because we all like him and because he makes his material in a very convincing way.  Of course, even he himself, emphasizes that we need to be individual-thinkers and question everything. But do we really do it? Do we question everything? Do we really derive everything for ourselves? I bet most of us don't and I noticed I  myself is very lame in it aswell and it is not the proper approach for the work of this kind of seriousness.

Edited July 10, 2018 by Hello from Russia

[Leo Gura]

Welcome to relativity.

[Guest Quanty]

There is no dialog at the end of the day between right-hand path zombies and non-dual human beings. 

I had to learn this the hard way. 

[Nahm]

@Quanty Just us morons talking to ourselves.