thats cool but we're talking about solo q not pro play dumbass.
The original thread was about Iso's kit as a whole. An agent being useful in either a pro play setting or in a ranked play setting demonstrates some sought of success in their kit. Outside of using popularity and win rate stats the opinionated points surrounding Iso's kit can be easily deemed as subjective.
His q acts as a fade seize that lasts longer and is on a duelist
All his Q/"Undercut" provides is the fragile effect.
Fade's seize provides a decay, restricts movement and deafens the enemy. Whilst also providing a slight indicator to whether an enemy was hit or not. That's not even mentioning the other util Fade provides.
His C (which ironically is a tool for taking space contradicting your earlier point) is a better harbor wall for taking space.
Iso's one charge thin wall is not better than Harbor's two charges which has the option to stopped.
Even outside of the frequency of the wall, Harbor's wall also provides a slowing effect and lasts longer.
The indestructibleness can be useful but it stills weak in comparison.
Besides it's all good to argue about each ability in isolation but what makes an agent useful is the way they can use their abilities in tandem. With the comparison with Reyna you are forgetting the flexibility of use cases that the devour/dismiss combo allows for. Reyna's kit works well for individual expression which it was made for, Iso has individuality in some of his abilities but in unison the kit does not function as smoothly or as usefully as Reyna.