You can’t validly tar that association with one brush.
I have a serious problem with the “turn or burn” message, and not because people are “scared straight” by it. I don’t believe in scaring people straight. I don’t believe it’s how any of the apostles came to Christ. I believe it wss the GOOD news of His saving grace rather than the fate of those who do not follow Him.
There is a place to catch people’s attention to a train of thought by reminding them of shocking truths. But morphing into a spiritual bully in the interest of doing so is an abomination. Oddly enough that might still result in conversions, but it is as by seeking to hide in God from the strawman or the bully. There are deleterious knock on effects if the strawman or bully remains accepted as the dispositive preacher afterwards.
You might have noticed on my Freep page I have gone to great lengths to explain how a state of hell is a consequence of sinning. It isn’t something like a divine temper tantrum, like someone’s raging parent. It represents God respecting what we choose.