This measure is more of a symbol than an effective way to reduce carbon emissions. Attacking symbols is a always nice, but isn't it a little bit late for that? I can't wait the day where EU will try for real to follow Paris agreement.
Correct me if I'm wrong here, but the Paris Agreement covers climate change, carbon emissions, energy production, etc.
The topic of single-use plastics, while related to sustainability, covers an entirely different emerging issue, namely: the infiltration of micro-plastics into our environment.
Besides the environmental effects that microplastics already seem to have, such as hindering plant growth [1], microplastics are also entering the food chain, and making their way back to us. The long-term affects are as far as I know, quite unknown.
A paper bag or cotton swab with wooden stick just dissolves if it ends up in nature. Plastic versions are around for a long time.