(Sorry for deleting my last message several times, but I can't find the option to edit it, so I had to delete it and create it again.)
If you find older topics about it the dev explained his reasoning a few times.
Yes, I have read them now.
...And he says volume isn’t linear so 50% doesn’t sound half as loud so decibels are better.
I think this would not be a problem, since the description of the action to set the sound volume using a percentage could warn that "a formula is applied to provide a perceptual result."
But I prefer setting volume from 0-100 instead of -infinity to 0 so the conversion formula is helpful for me.
Me too, without a doubt, because I need to use Construct 3 as a practical and intuitive game engine, and not as an accurate sound editor.