People do not prefer puzzles with erasers, but does that mean that we should not have puzzles like Snake, Curve Data, etc?
The basic intention is that we will avoid the eraser symbol in puzzles which do not require tweaking.

Although the puzzles which require tweaking are obvious we can indicate that within those which ones require more tweaking.

Also this is just one possibility there can be other symbols to represent other things, for example a light bulb could indicate that this puzzle requires a bit of out of the box thinking.

I would prefer snakes like the ones on PR, which were logical, but people still preferred to solve with tweaking. However, we can go with, this puzzle is "better solved" by tweaking though there is a logical path in our initial description and then I think it would be fine. Toketa have a few eraser puzzles on volume 3 which I solved logically.