Honestly, do you ACTUALLY hear anything when going forward? None of my Model 3s make any noise I can hear when in Drive from 0 to 10 mph. The air conditioner and coolant pumps make some noise, but I have never heard any PWS in Drive. Complained to Tesla, they said everything was Jake. I even rode in the frunk while my wife drove down the alley and I heard nothing, even with my new Super Whizbang hearing aids. The Rocky Jones backup noise is quite noticeable, but nothing while driving forward.
Forward is actually a hissing noise. I hear it well when the window is down. I also hear it when my neighbors drive by with theirs. I think the reverse is more prominent and obvious. Here is a video that differentiates the noises: