Rigs would have cameras because they need to see where they are drilling and going. Oil pipelines are unmoving infrastructure. That said it is multi-billion dollar infrastructure so there may be cameras and I could be wrong. If there isn't any right now, there likely will be in the future after this sabotage.

And yeah, there is clearly some fear mongering going on. I looked for livestreams or records of them of old oil leaks, and it was actually a wall of the nordstream pipeline news drowning it out in search results.