I think I misunderstood your question earlier. It’s before the can is opened. The can in that picture has a tab that sits very firmly against the can lid. It’s hard to get a grip on it without using your fingernails and the tab also has little sharp bits so its very easy for the tab to cut the sensitive fleshy tissue under your fingernails as you pull the tab up. So I switch to using a spoon to jimmy it up before switching to using fingers to finish the job.

The finger shredding would happen as an result of opening the can and remain shredded after until healed so during and after. Dunno about the spoon.