Inaccurate description for read-only and disabled in Input Field

In the input text field section, I saw this description about the disabled and readonly:

• Note: For accessibility purposes, Disabled and Read-only fields should still be input text fields, just styled differently so that keyboard users can still focus on them (ISO 9241 161 8.34, Eyal A11y expert from EVOYA).

However, by default, readonly fields receive tab focus, disabled fields do NOT receive tab focus. Difference between disabled and readonly