"I see people put "octane booster" or "premium gas" in their crappy cars, hoping it will make them faster or more reliable."
How is this statement incorrect in any way? And how would you be able to determine if I have seen people pour octane booster into their Geo Metro, while they were bragging about how much faster it makes their car?
Anyway,
I would suggest that people do their own research and choose the option that they feel is best. Especially when its something as important as using the correct octane, diet, medical treatments, vehicle to purchase, the best brand of refrigerator, etc.
Read the forums, talk to the experts, research all the available information, and draw your own conclusions. Facts and opinions can be a grey area. Interpretation can be a factor as well.
Even if one direction is the "correct direction" for most, its not going to be ideal for all.
Don't follow anyone's advice, but rather use that advise in combination with your other sources of information in order to make the decision that you feel will suit your needs the best.