don't know if you know the ins and outs of how solid state drives work
(or whether you care...) ... basically a series of transistors which
are either on or off... multiple times over... making up data... when
you "zoom out" from that level
as with any electronic devices... they eventually get worn out!
imho... don't WORRY about it too much... you're unlikely to be writing
enough times to come close to the situation