The gradual dumbing down of the profession and a general ambivalence to perceptions is disappointing. I don't understand why people do not appear to value their skills and the role accordingly, or why it is in anyone's interest to accept the gradual erosion of the profession by bean counters, snake oil salesmen and the marketing department. The casual attire Bonza is proposing does not appear professional to me, or be taking aircrew roles seriously, however the spin-off may be a more comfortable attire that is fit for purpose.
Problem is that you want people to refuse jobs so that they can uphold your values. While I would probably agree with the sentiment I don't think there is much you can do other than quit or not apply.
From the looks of their uniform Bonza is another attempt at socialising responsibility where all employees are equal. That is of course until something goes wrong then suddenly it's all the Captain fault.