What scanning means, and how that might affect people and society, are precisely the issues in dispute. A poll which tries to provide arguments and evidence about contested issues cannot yield meaningful results. To pursue this line of reasoning, for example:

> Your context-free formulation on the other hand provides no information for voters to weigh. Privacy or child porn detection? Well I guess I’ll pick child porn detection. Oh, you wanted to do what to my privacy? Never mind!

you might ask questions like "How comfortable would you be with your personal mobile provider scanning your chats for child porn?" or "What would you consider to be an acceptable accuracy rate for such a scanner?". Then you could reasonably infer that respondents who say "not comfortable" or "90-100%" oppose Chat Control, because Chat Control will perform such scans and they're not 90% accurate. (Someone else who thinks the scans are 90% accurate might respond that your interpretation is wrong, but this dispute would not call the poll results themselves into question.)