Would you be satisfied if all your refurb drives live only for the duration of this warranty?
I wouldn't. Especially as a private buyer (or a small business) I would expect that most of them must live much longer than that.
But after knowing all what is really going on with this refurb business, you have to expect to actually use the warranty, that is, see drives actually fail within the warranty period and then request replacements by warranty claims. Not as an exception, but for a good part of all that you have bought "refurbished".