This is dangerous

Hence my point about why bother at all. Without full encryption one gets leaks. With full encryption some kind of secret is required. Either password (hence that need of keyboard in earlier comment) or a key, etc

In order to not need a secret during boot, critical parts have to be exposed

Theoretically one could also put logs and cache on encrypted volumes. Maybe that could be some solution. I have in the past had /var/logs on separate partition, so it didn't make /run out of space. Linux had no issue with that. But that still leaves kernel and OS exposed

fully encrypted drive and this chain’s existence makes it easier to know that no one has tampered with my system

The comment I responded to mentioned:

needing to enter a password before the OS boots is a decision that makes Linux kind of awkward to use disk encryption with

I don't think you are talking about the same setup and vectors. Their point was to not have fully encrypted drive, so it boots without a prompt