Audacity defaults to rendering audio as stem plots now, when zoomed in.
I found https://thewelltemperedcomputer.com/KB/SRC.htm to be interesting. Near the bottom, it has sinc-interpolated visualizations of discrete-time signals (though saying that resampling is bad, because of a Nyquist-frequency signal not surviving an upsample and downsample, is misleading). What program is that?
Now I woke back up and actually checked. You're correct, this display (I would call these "Lollipops" not stems but I get what you mean) is no longer misleading, so that's great.
I found https://thewelltemperedcomputer.com/KB/SRC.htm to be interesting. Near the bottom, it has sinc-interpolated visualizations of discrete-time signals (though saying that resampling is bad, because of a Nyquist-frequency signal not surviving an upsample and downsample, is misleading). What program is that?