Yes, they do but only for a finite amount of time and most will board the plane because realistically they “don’t have any other choice” given their timeframe ( going home for Christmas, attending a meeting in the morning, etc ). However long term they internalize ( rightfully ) Boeing equals bad and danger. If an airline comes up and announces all their fleet is now all brand new Airbus people notice and prefer that, airlines know that and if the numbers are close they’ll run Airbus. However.. aircraft buying and operation is an incredible complex world, history and politics are a huge factor too, safety is not a factor, “risk” is, they overlap but are not really the same. Most of this will go away in a month or two, until the next plane goes down.