by timestamping I didn't mean in terms of, getting the most precise time possible, but in terms of a very difficult to fake-in-large-ways timestamp.

I have at least slightly more trust in the bitcoin blockchain not having the times be falsified in a major way than I do for any of the centralized timestamping services where you are trusting the security of those companies' timestamping servers.

The reason why I say "slightly more" is because I do have a pretty large amount of trust in those timestamping sources.

Bringing up the coal-powered is irrelevant to my point, which is not about whether it is worth it, but whether it has any uses.