Some of the guitar work reminds me of Ratatat.
You might also like Washed Out.
Songs that make you have flashbacks of things you never experienced.
There are all kinds of bands that do that for me. The first two that come to mind are Explosions in the Sky and The Midnight.
Also there's a recently invented word for that feeling:
Anemoia - n. Nostalgia for a time or a place one has never known.
I'm actually not sure what TPM can guard against, but I think you're right, I think if a malicious OS borked with the bootloader, TPM would catch it and complain before you decrypt the other OS.
Yeah, physical access usually means all bets are off, but you still lock your doors even though a hammer through a window easily circumvents it. Because you don't know what the attacker is willing to do/capable of. If you only ever check for physical devices, you'll miss the attack in software, similarly if you only rely on Secure Boot you'll miss any hardware based attacks. It's there as a tool to plug one attack vector.
Also, my guess is the most common thing this protects against are stupid employees plugging a USB they found in the parking lot into their PC. If they do it while the OS is running, IT can have a policy that blocks it from taking action. But if they leave it there during a reboot, IT is otherwise helpless.