That columnist puts forth a specious disengenuous article aimed to trigger buttons with the uninformed.
It implys all the responsibility lies on the shoulders of the actor. Fact is, it's like anything else in Hollywood which can very much be hit or miss. There is an interesting phenomena that takes place after an Oscar win tho, and it's similiar to the feast or famine existence typical of most acting careers. Once an actor wins an Oscar, ...one of two things happens. The phone either rings off the hook, ...or it doesn't. In addition, the scripts available and on offer play a huge role in the types of projects they are able to do. An actor can get lucky by having another project of equal calibre, ...but most often that's not the case, and they don't come along too quickly. The higher you rise, ...the less work is available. There have been plenty of oscar winners who have worked on some real stinkers post oscar because they just wanted to work. Look at Hilary Swank and that abomination where she had to go to the centre of the earth. Thank Goodness Million Dollar Baby came along. Then too, ...there are the layers of agents and managers who have been known to inadvertently put an end to an otherwise promising career. There's a very fine line between art and commerce, and whether an actor is offered roles post oscar depends most frequently on their ability to tap into the commerce side of the equation.