First off, having to hit skillshots to one-shot you is still one-shotting you.
Second, most of Kat's damage isn't point and click these days. Mainly that is her Shunpo, the thing that got nerfed.
Third, the nerf was intended to reduce Kat's early damage potential so she has a ahrder time reaching that 20/2 stage, It did a pretty good job, as it substantially lowered her all-in power both by cutting her sdmage by ~.45 AD (multiple Shunpo casts is what is making her so strong early) and discouraging taking AD runes or building early AD.
Probably still not enough nerfs TBH, I'd like to see her not able to pick up a dagger while ulting, so that E>W>Ult wouldn't include grabbing the W dagger mid-ult anymore. And the range for which her E will apply damage to you when she Shunpo's onto a dagger is a little high.