And those satellites, by bulk, are in low earth orbit with a lifetime of usually 4 years, and a legally mandated reentry in 25 years.

JWTs location in L2 (a mathematically unstable location that requires energy to not roll back into a gravity well in any direction) is like putting it on the satellite equivalent of K2 and not coming down from the peak for 20 years and you compare it to the thousands of commuters that made it up the hill down the road from your house.