Here is some simple accounting based on logic.
When it gets close to the end of the tax year people will sell a stock to take the tax loss. If there is no hope of it ever going up, that is a decision that is usually made. The loss can then offset another investment where they had a gain. This also happens during the year as a short term investment can turn into a long term investment. People may sell in July...for instance, if they purchased the stock the previous August. The short term loss can be used to offset a short term gain. Once it flips to a LT investment you are limited to 3,000 until the loss is used in full...or unless you have a long term gain to offset it. That won't be happening here.
Simple.