Ignore the scare mongering.
Pick a good one and maintain it properly and it's unlikely to be an issue.
That said - you still need to be prepared for such an outcome - if a blown engine is going to ruin you then you should consider something cheaper.
There are plenty of cars that can and will throw bills just as large, though.
If, however, you have a decent disposable income but still want a cheap car that handles beautifully when on the boil, then go for it.
"Scare mongering"
Just telling it like it is. The car requires more attention than most in its price range. All because of the engine.