Also "HELLO KITTY" being backwards is odd - writting on trains doesn't normally come out like that eg https://www.groupe-sncf.com/medias-publics/styles/crop_1_1/p...
The whole video was probably mirrored before being posted. Doesn't seem to be related to being AI generated.
All the text is mirrored. It's not unusual doing this to avoid copyright-filters. This kinda adds to distracting suspicions.