[perihelions]

I think composite-overwrapped pressure vessels could survive intact, though those are technically not fuel, but inert pressurant gasses. I believe Starship uses both helium and CO2.

One of the Falcon ones reentered as space debris in Washington state, in 2021,

https://www.theverge.com/2021/4/2/22364582/spacex-rocket-deb... ("SpaceX rocket debris lands on man’s farm in Washington")

edit: There's a few other examples on page 47 of

(.pdf) https://www.faa.gov/sites/faa.gov/files/Report_to_Congress_R... ("Risk Associated with Reentry Disposal of Satellites from Proposed Large Constellations in Low Earth Orbit" (2021))

edit²: Here's what the Starship COPV's look like (being recovered from the Indian ocean),

https://old.reddit.com/r/spacex/comments/1h1l1gk/starship_s3...

[russdill]

Ya, there are real risks, COPVs, burning batteries, and the flight termination system explosives.