Originally Posted by
VegasGambler
I just don't think that airlines should be able to engage in bait and switch tactics. If they see that people are not comfortable flying in the MAX, airlines could book all flights in other places and make last minute equipment swaps to the MAX. That would be fraud, but it wouldn't surprise me to see certain airlines (not UA) engaging in such tactics.
It may be unethical, but how would it be fraud? No airline guarantees a specific aircraft will operate a specific flight, and all that I know of are quite clear that equipment swaps, seat changes, etc. might happen. When booking a few months out, equipment changes are not even unusual.