Her Q and AA animations are so long that any decent Mid or Top laner is gonna punish you for trying. Until she gets decent stacks on her passive to increase her auto to or past Caitlyn levels at 40+ she is hella vulnerable to ganks and CC.
Darius Pull and she DIES unless she can land a W. Which is as slow as Morg root and just as easily avoided.
Fiora Riposte W, she is stunned and Fiora is ALL OVER HER.
Renekton dash and stun and Nasus wither.
Irelia everything.
Katarina will just E over her W and punish her.
Zed will have a field day with her.
Fizz will just pole hop her W and then delete her.
I mean I can go ON AND ON AND ON about how BAD an idea that is. The BEST match up against her I can think of is Annie since all her abilities are 625 range and she will outrange them all pretty quickly but even then a flash Tibbers death.
She doesn't have the escape tools to STOP most top or mid laners.
Most point and click CC has been phased out of League meaning her E doesn't stop it from going through and most mid and top laners have some kind of AoE non-targeted ability to damage champs that can go invis like her.
I hate videos like the one linked to cause its almost pornographic in nature since its always the best possible scenario. Either he is using friends to bring the Elo in the match down far enough that he could faceroll his keyboard and still win or he is being fed in a custom game FOR THE VIDEO content. Like show me the matches where she fails. Honestly I have only seen her really push a match to win from the support role where she helped feed a Draven like 8 kills before the 10 min mark. Most other matches she had minimal or negative impact.