A couple of points about Gabe's catch percentage.
Its not like Gabe plays in a short precision, timing passing WC offense like Reid and Mahomes with tons of YAC.
Gabe plays in a different deep ball EP system where routes are typically 40-45 yard deep outs to him. He's playing the Z position where Diggs is playing the X position.
On top of that, as it gets colder its much tougher to catch longer passes in 8 degree buffalo weather, frozen field where the ball is hard as a rock.
Would Gabe flourish in miami or san fran for example that has the WC system in warm weather on natural grass ? Tough to say.
My point is catch percentage in our system/weather is not an apples to apples comparison to a warm weather WC system.