Impact metrics control for era -- pace, league-wide true shooting %, offensive & defensive rating, etc. That's part of why I value them so highly.
I'm not sure Kobe would look better in the modern era, though. He was a remarkable bad-shot-taker and maker out of the triple threat position, and those types of shots (and players) have either adapted or died out. Would he have had the ego to diversify his game like Ant has? Would he have been able to play a supporting role in a two-man game with a big the way Murray's done?
I kind of doubt it, though obviously we'll never know.
In the end, tho, we're talking about a top ~15 player of all-time in spite of his shortcomings.
Also, my hottest basketball take: If Ray ends up on the Lakers instead of Kobe, they win 5 titles instead of 3 with Shaq because 1) better spacing, 2) Ray was a more willing sidekick, and 3) Ray was far, far, far more clutch than Kobe.