I do not oppose it on moral grounds, but it cannot safely be executed by someone who is not at least moderately familiar with air travel mechanics, and people who are sufficiently familiar generally already know about it. So offering it as a “great tip” without mentioning that there are risks is a really hazardous thing to do.
EDIT: I would say that my opposition to it (for my own use) is based on the perceived risk/reward ratio being terrible. For someone who doesn’t have a lot of money, and doesn’t mind doing a lot of reading to carefully understand the risks, OR doesn’t mind occasionally getting hit with serious downsides (like losing your luggage for an extended time), I think it can be a great strategy. But the risks on the downside are both significant and unexpected if you aren’t warned about them. (Cancellation of connecting flights or temporary loss of luggage are very significant downsides if they happen to you without warning.)
I do not oppose it on moral grounds, but it cannot safely be executed by someone who is not at least moderately familiar with air travel mechanics, and people who are sufficiently familiar generally already know about it. So offering it as a “great tip” without mentioning that there are risks is a really hazardous thing to do.
EDIT: I would say that my opposition to it (for my own use) is based on the perceived risk/reward ratio being terrible. For someone who doesn’t have a lot of money, and doesn’t mind doing a lot of reading to carefully understand the risks, OR doesn’t mind occasionally getting hit with serious downsides (like losing your luggage for an extended time), I think it can be a great strategy. But the risks on the downside are both significant and unexpected if you aren’t warned about them. (Cancellation of connecting flights or temporary loss of luggage are very significant downsides if they happen to you without warning.)