In real life it would be pretty easy for everybody to reach a consensus that:

- Every design has advantages and disadvantages.
- No one design is best for every use.
- Different people have different personal preferences.
- Any stove will be unsafe if used stupidly.

On the internet? Massive uncontrollable flamewar. Alcohol stoves are definitely unsafe on bike forums. I look forward to an "alcohol stove" sticky thread like the one for bike helmets.