It seems every decade they reverse their position on tourniquets. I believe that they're discouraged because they tend to do more harm than good when applying

It seems every decade they reverse their position on tourniquets. I believe that they're discouraged because they tend to do more harm than good when applying a gauze and pressure is sufficient. People tend to go overkill. However, there are situations where they save lives. This is why simply having first aid supplies isn't sufficient, but actually knowing what to do is essential as well.