>I resent this framing as being entirely about short-sighted consumers valuing convenience.

Your resentment is not valid. The switch to plastics did not happen overnight. There used a lot more choices in the past. Common people increasingly chose plastics over a period of time. ( or rather were lazy) Your resentment can be rephrased as - "I cannot come to terms with the fact that common people really are that stupid".

Freedoms in various forms are generally not taken away overnight. As they say "The price of freedom is eternal vigilance"