There's a reason they default to software though, the hardware can't be trusted:

https://www.tomshardware.com/news/bitlocker-encrypts-self-encrypting-ssds,40504.html

Those people were actually worse off than anticipated because Microsoft set up BitLocker to leave these self-encrypting drives to their own devices. This was supposed to help with performance--the drives could use their own hardware to encrypt their contents rather than using the CPU--without compromising the drive's security. Now it seems the company will no longer trust SSD manufacturers to keep their customers safe by themselves.

Linked from that article:

https://www.zdnet.com/google-amp/article/flaws-in-self-encrypting-ssds-let-attackers-bypass-disk-encryption/

Researchers at Radboud University in the Netherlands have revealed today vulnerabilities in some solid-state drives (SSDs) that allow an attacker to bypass the disk encryption feature and access the local data without knowing the user-chosen disk encryption password.

The vulnerabilities only affect SSD models that support hardware-based encryption, where the disk encryption operations are carried out via a local built-in chip, separate from the main CPU.