Good descriptions and pictures.

The proper way to fix is lifting the head as they had done. The "gas in the tank is worth more than the car " / " I'm fixing my own car and will risk it" fix would be.:

Lift the intake, remove plastic from the intake valve, scrape / polish off the soft metal transfer on the cam lobe, inspect the rocker roller for damage ( the rocker looks like it could go again ) replace the intake flap system.

This kind of fix would last as the cam is pretty hard and the rocker body soft. However it is unlikely that a shop would risk actual or perceived liability if something else failed down the road.