Checking boarding pass at plane door – why?

[ExXB]

EF, can't speak for the OP but some people don't like change. Particularly when they don't see, or haven't be told ,the reason for the change.

Flying these days is theatre. Well thought out rules are perceived as being silly, or intended to confuse, or to irritate. (I exclude security from this statement as there are no well thought out rules in their domain and their entire existence is intended to be silly, confusing and irritating) Take my example above where a standing policy simply failed in its purpose, but follow up procedures did prevent things going too pear shaped.

Managing the introduction of change is a science and when it is done poorly it leads to unintended consequences, and unhappy customers.