It would make more sense to ensure that any sensitive technology on board is in a demisable subunit that will melt during reentry, so nobody has a chance to snag it after it reenters.

This is also a safety consideration in satellite design - see, for instance: https://spectrum.ieee.org/spacex-claims-to-have-redesigned-i...

If the whole thing comes apart into tiny pieces, you have no chance that anyone/anything on the ground will be injured/damaged by falling debris..