Almost every review of a product is published within days of its release. The problems that matter most to owners appear months later, and very little coverage exists at that point.
Attention arrives once and then disperses
Interest in a product peaks at announcement and again at release, then declines steadily. Publishing outside those windows reaches a small fraction of the audience.
Because most publications depend on traffic, effort follows attention rather than usefulness. A revisit after a year is worth considerably less than a launch piece regardless of its quality.
The result is that coverage volume is inversely related to how much is actually known about the product.
Long-term testing is expensive in a way launch testing is not
A launch review occupies a reviewer for days. A twelve-month assessment requires the device to be retained, used consistently and documented throughout, while newer products demand attention.
Loan units are usually returned within weeks, so genuine long-term work requires purchasing the device outright and accepting that its value is committed for a year.
Few publications can hold enough devices to cover a category this way, which is why the ones that do tend to focus on a narrow selection.
The interesting failures are slow ones
Battery capacity loss, hinge wear, coating degradation, port looseness and thermal paste deterioration all develop over months and are invisible at launch.
Software behaviour changes as well, since updates can improve or degrade a device substantially after the review has been published and indexed.
None of these are detectable in a short window, so the most consequential characteristics of a product are systematically absent from its coverage.
Owner reports partially fill the gap
Community discussions accumulate exactly the information reviews lack, since owners encounter problems on their own timeline and report them as they occur.
The weakness is selection: people post about faults rather than about devices working normally, so the visible picture overstates failure frequency without indicating a rate.
Update policies are the one durable signal
How long a manufacturer commits to supporting a device is stated at launch and determines a large part of the ownership experience afterwards.
Unlike most launch observations, that commitment can be assessed immediately and compared across products, which makes it unusually useful in a review.
Reading a manufacturer's record of honouring previous commitments adds the historical evidence that a single product review cannot supply on its own.