As stated, easily replaceable.
But, even if it wasn't, or something else happens to the unit......if I get several years out of the most compact and to date the best chronograph....for $600.......I'll just buy another for $600 (will likely be better or updated by then anyway). If it works for three years, you basically paid $17/mo for one of the best advancements we have seen recently.
Not trying to make this a "go be poor somewhere else." Just how I look at things so I'm not always stressing over what I personally feel is something insignificant. Obviously others may disagree and want to squeak everything they can out of every penny they spend. And that's also a valid opinion.