I'm wondering what others think about such feature (in general, not just in this specific case).
On one hand, it won't negatively affect my personal usage in anyway, probably even beneficial; On the other hand, the "purist in me" feels very uncomfortable with this kind of features (probably to the detriment of myself).
Again, this is not a complainant at all. Just find it interesting.
https://www.cyberciti.biz/tips/displays-animations-when-acci...
Personally I have sl aliased to sl=sl && ls to make sure I break the habit of ever typing sl.
(Though also usually I'm typing ll which I have aliased to an ls with list mode and many details)
Also with something like auto-correct, you have a visual affordance that alerts you to the change (with the option to override), which just happened when I misspelled 'forgotten' above. The shell doesn't have that so something just happens without any actual correction or indication the user may have made an error. Although I am not a 'fish' user, this is something that I think it does well.