They are going for scale, where missing launch window is more expensive than just launching the rest of the payload.
https://twitter.com/SpaceX/status/1193687615528042496
And in this case, if dead, the satellite will be used as a science experiment
https://twitter.com/SpaceX/status/1193687615528042496
And in this case, if dead, the satellite will be used as a science experiment
There is an annoying interstitial ad, but the URL really says it all. From March 21, 2019.
They say the first 75 have iron thruster parts and steel reaction wheels which can survive reentry, but that in subsequent builds no parts will come down with lethal energy.