

I don’t support this decision in any way, but I can at least think of some legitimate motivation for it (assuming the Synology branded ones aren’t marked up from the equivalent Seagate/Toshiba ones). I imagine Synology has to deal with a lot of service calls and returns for issues that are caused by shoddy drives (like those Seagate drives with the fudged lifespan numbers), not by anything that they can directly control.
In reality, the above was probably what sparked the idea, but I’m betting that they’re going to jack up the price of those drives just to squeeze out a little more profit for this quarter.
Every application kind of needs two modes: a default mode where the user is railroaded into making the right decision, and an “I’m not an idiot and will actually read the documentation before/after trying to make things work” mode. If you stick the toggle for the two modes somewhere that you’d only find by reading the documentation, people will automatically categorize themselves into the mode the ought to be in.