People vastly overestimate the mechanical requirements of pro play.
Maybe good aim was more important during the early days of val, but nowadays most of the shit players have faded into obscurity, and there's more than enough talent not only capable of shooting back, but excelling at their assigned roles too.
The most convincing example of this is Runi and Jakee.
How did two players of their caliber fail to make T2?
The truth is valorant's (at least NA's) Tier 2 scene already contains individually talented players that would be more than capable of performing at a T1 level if put on any franchised roster.
There is a comparatively larger supply of good players, but being good individually isn't enough to make it very far.
Now, I'd like to mention that IGL's aren't all powerful either. Runi had the opposite problem, and a problem that made us underrate a lot of great IGLs in the past--his team was shit.
Look at any of the world's best IGL's 2 years ago and you'll find FNS getting railed by Sentinels while playing with kaboose and c4lypso, Saadhak getting fucked by Sentinels under the Vikings roster.
It's easy to call the engine on a car useless when that car has faulty wheels, but it's only when you put that engine on a well-kept vehicle that you can see its true value and compare it to others.
Good IGLs are hard to discover: so if you manage to find one, especially a flexible one, make sure you don't let go or your roster will be doomed to be like Sentinels.
Also the coach plays a big role in the IGL's performance so try to get a package deal if you can.