Alternative to Implicit Flow for EntraID login?

We’ve been using EntraID via Implicit Flow to log our users in for a couple of years now, but see Microsoft are now recommending deprecating this method in favour of Authorization Flow.

Is this possible with PSU?

Checking the doc above, it still recommends Implict Flow as we have it configured - would moving to Authorization Flow require a change at the PSU end or is it something in our gift to fiddle with?