It depends on your use-case.
Encryption of data at rest (this discussion) is mostly helpful for physical theft, so a device that never leaves the house, there’s little reason for encryption.
Similarly, on a lower powered mobile device, maybe you only want / need user data to be encrypted, and there’s no need to encrypt the OS, which keeps the performance up.
Maybe you want the whole thing encrypted on your high performance laptop.
So, it’s difficult to define a sane default for everyone, thus making it an option for the end user to decide on.
Linux has more choice than Windows - and the encryption algorithm(s) can be verified - so it’s definitely the better choice.
Yes, I feel your pain.
Encryption drives sound like a good idea until the subject of unlocking them comes up… and automatically unlocking the drive for the OS isn’t really helping.
But, for user data, it can be unlocked automatically during login. The Arch wiki covers this.
But backup your data 😉