Nope, that's not what we call slippery slope. This system does not require data recording or sharing, does not require cameras.
Once the camera is there, the temptation for future governments to use this power for more things than originally required will become irresistible.
also: https://www.google.com/search?q=what+does+slippery+slope+mea...
It absolutely is a slippery slope argument.
"New government mandate paves way for additional government mandate" is about as straightforward a slippery slope argument as you can get.
Slippery slope arguments don't require the eventual fear (e.g. cameras recording you) to be present in the current form, otherwise it wouldn't be a slope.