It is a deprecated hardware now, it is not installed in any modern development PCs. And like it or dislike it, but days of focusing development or even performing compatibility testing on Polaris GPUs are in the past. So it can be both pro and con depending on your attitude to zero RPM mode. Curve based fan speed control is decoupled from zero RPM mode, it doesn't disable zero RPM/fan stop automatically like the previous dedicated fixed fan speed control implementation. Do not expect to be able to set fan speed below 25% now on Polaris (or even higher, min limit is defined by your VGA BIOS). Curve based fan control has higher minimum fan speed limit, so you won't be able to set it as low as before with native fixed fan speed control implementaiton. A few notes related to such fixed fan speed control emulation: You can also bypass it via MSI Afterburner config file by setting ODNToOD5FanControlFallback to 0, in this case it will also alter whole curve to emulate fixed fan speed programming instead of using dedicated API for setting fixed fan speed. Fan table/curve based speed contol is the only option left now for such cards with new drivers, fixed fan speed control is gone and can only be emulated by setting 'flat' curve.

AMD traditionally corrupted (intentionally removed?) fixed fan speed programming API (Overdrive 5 compatible fallback path) for old Overdrive 7 GCN GPUs in 22.5.2. Found old PC with rusty Ellesmere (RX470) GPU in nearby area to peek inside the reasons, that's the only thing I can offer.

Hwinfo fan control missing