Hey ! 
Some abilities in the game indicates the opponent of a incoming threat. This help all types of players to play around it and prevent to be surprised everytimes.
The most popular indicator is the Shrike LMB. This is the first skill shot you have to worry when you start Supervive. You learn the pattern, the range, the delay, everything.
The more you play, the less you need these indicators, because you start to know every interaction of the game. That means, to surprise more advanced players you need to play with this indicator and fake the trajectory, enabling more outplay potential.
Is it something enjoyable for a new player player, to trust the in game indicator, and get hit because someone flicked it ?
Does this visual clue is not consistent enough, and some abilities deserve this indicator ? (KP hook or Bishop ult for example)
Does this flicking mechanic prevent the basic counterplay of the ability ?
Is it something frustrating you absolutely need to get over it to progress ? Meaning that some people will lost their mind before actually invest more time learning the game.
Is it healthy for the game ?
Now this post is not about agreeing or not if this is a good thing, i just want to know your thought on these questions and the overall aspect of indicators flicks in the comments.
I know some friends of mine quit the game too early because how they perceived this as an unfair interaction.