It is a useful explanation, but it does seem like stock manipulation nevertheless.
I am disturbed over what the stock market has seemed to become over the last 20 or so years. Admittedly, my knowledge is rudimentary, only having researched enough over the years to be "investment club"-level savvy. It seems like the overall increase of the market is less about the strength, fundamentals and future of corporations, but merely how they can puff up their numbers for short-term gain. It appears to operate more like a casino and less like an exchange that exists to support American corporate financial strength.
I was disturbed by this more than 20 years ago. It's not a new phenomenon. The market mirrors humanity - we tend to have a short attention span. We prefer quick rewards to deferred gratification. Since shareholders have a vote, companies that sell shares to the public are unlikely to operate in a manner contrary to human nature. Perhaps humans have become even more short-sighted and greedy than we used to be, but I doubt it. Aesop's fables (Grasshopper and Ant, Tortoise and Hare) have been around for quite a while.
As far as I'm concerned, the market is peripheral to corporate financial strength. The market exists to promote liquidity when selling and buying shares in companies. When a company needs to raise capital, that liquidity is a good thing. It's easier to offer shares to the public than to track down potential investors.
When a company is not selling shares (which is most of the time), the market's relationship to the company's prospects becomes less distinct. At that point, it becomes a vehicle for investor-to-investor transactions, and a barometer of investor sentiment about the company. Market sentiment can either entrench CEOs and boards of directors or drive them from office, it can affect banks' willingness to lend money to the company or call a loan. It can affect corporate morale and enrich or impoverish employees who received stock as compensation. It can make a company a target for takeover, or make that company capable of using its share value to take over another.
But for day-to-day operations? A company survives or falls on what it produces and how well it sells those products, how well it employs its capital, etc. Apple seems to have done that very well.
We certainly have a clash of long-term vs. short-term viewpoints at the moment. Giving a wad of cash to Apple shareholders is definitely short-term thinking - it damages the company's actual financial position (capital available for investment), but it has the potential for increasing short-term share price.