Undesirable resharing of personal information is only one consequence. In my time on the internet I've known it to be said in the context of other consequences, be it archiving, digital archaeology, datahoarding, etc.

I do like legislation that stops big players from using their resources to be exploitive, and I understand the right to be forgotten for individuals.

The other edge of the sword is all the reasons why information wants to be free. I am biased towards this side.

Either way, I think it's important to remember to operate under the axiom that nothing is deleted from the internet. Deletion (by legislation or by privacy tools and services) is a cludge, and saving and resharing is the natural force.