Size specification in phfqit package: is it possible to change the default (no size specification is present) to auto-sizing by \left and \right ?

[John-foobar-Doe]

In phfqit, when no size specification is present, then the normal character size is used (section 2.2 of http://mirrors.ctan.org/macros/latex/contrib/phfqit/phfqit.pdf); when using `* or a single star * as in \ket*{}, then the delimiters are auto-sized with \left and \right.

In many other packages such as physics, physics2, and physics-patch, the default sizing (when no size specification is present) is automatic by using \left and \right, and when * is used, then there is no auto-resizing and the normal character size is used. So I'm wondering if it's possible to add a package option for phfqit to switch between these two, i.e., change the default size (when no size specification is used) to automatic sizing with \left and \right, and star * is used for normal character size without auto-resizing?

If this is impossible, then is it possible to override phfqit's default sizing and change it to automatic by \left and \right?

Many thanks!