I live in Sceaux, bit south of Paris, where she lived some years. I once visited her house (now owned by someone who worked with one or more descendants of her) at some special occasion. One of the bedroom has a radiation sticker, and is officially controlled by the authorities, as some radiation were found. She obviously used to bring some work home :)
Living since almost 15 years near Paris, in a few different places, regularly taking line B, C, D, M6, M7, M13, M1, some buses, as part of my regular commute, and have never encountered the shit you are talking about. I do know that some places are more problematic than others, by example M6 drivers regularly warn of pickpockets on saturdays (it's a touristic line, the only one I regularly take that have such announcements), sure not everything is perfect, but you are either biased (where did you live when you were in Paris?) or actually purposely actively trying to spread fud to insist like you are.
Well, I take such seats on long distance flights (France to Japan, with one stop), and we take the same last aisle seats before the toilets, on both planes (A380 and B787) and on both way. Overall we are satisfied and will do again :
- no one bothering you behind and you do not bother anyone when reclining the seat
- easy access to toilets AND to water/snacks at the back
Maybe it depends on airlines and on what other people eat before their flight :D