I can't give as coherent of a post as I'd like, as it's pretty late and I must be up early for work in the morning, but maybe I'll come back to this when I have more time... at any rate:
I agree that much of the "mainstream" theology being "taught" in many pulpits can be (or in many cases very much is) on the toxic or errant side. There's any number of anecdotes that may be given to illustrate this, but I'll choose to leave that out for now.
At the end of the day, we all need to remember Acts 17:11 and take a very serious example from the Berean Jews who studies the scriptures (that were available to them mind you... I'm sure we have even less of an excuse, right?) CONTINUOUSLY (and eagerly) to check that what they were being taught was TRUE, and in accordance to God's word. Too many people suffer from what I've heard referred to as "Biblical Illiteracy". They think they know a general idea of what a certain scripture teaches, or was a specific passage is about, but haven't looked to far beyond the verse itself, or maybe even just what they've heard from somebody else. With the tools available to us today, there's absolutely no excuse not to know the Word of God forwards and backwards. Heck, you can study clear back to the original Hebrew, Greek and Latin if you so choose to spend the time and use the tools available.
Don't take your pastor's word, my word, or anybody's word for anything. Read the Bible. Study, wrestle, pray for wisdom, and meditate on it continually. I think if everybody did that, there'd be far less toxic theology passing through the pulpits, far less confusion, or even outright lies. We are promised to be given wisdom if we ask, are we not? Seek and ye shall find, knock and it will be opened, etc...
Jesus gave a command: Be not deceived. It's not a suggestion. God is the original and ultimate designer and his holy word is no exception. When taken as a whole, and poured over thoroughly and in proper context, there is much design and precision that emerges forth and gives us a very clear picture of who God is and what he would have for us, how we should live, worship him, treat others, teach, be taught, and on and on. It stands alone, living and active. It's as pertinent today as when the ink was originally drying on the parchments.
All this "conservative vs liberal" Christianity, denominational, religious nonsense is just a bunch of noise if you want my opinion. Jesus was arguably the most anti-religious person to ever walk the earth. He was crucified for it for crying out loud. These ideas aren't new, and they're part of the very thing that Jesus taught about and against back some 2000 years ago.
Ah well, I'm sure there's much more I could ramble on about, but the main point is this: God's own inspired words are written in black and white (and sometimes red I suppose), and if we'd just pour over HIS words a little more often, a little more thoroughly, and a little more PRECISELY, I imagine there'd be just a little less confusion and toxicity being spread around.
[/Soapbox]