Driver Stats

Done a few short runs through season one to the start of season two and it seems like all drivers stats change the same regardless of how the season goes the same as My Team.

So my question is: is that by design or is it supposed to be dynamic like the players stats but they're mistakenly changing like in My Team? Or is this simply by design?

I ask because it pretty much makes rating rivalries completely redundant since the players will always increase faster. Especially redundant if you end with Stroll or Ricciardo as your rivals since their stats are dropping at fixed intervals like in My Team.

So, is this an issue that should be being looked at so ratings can be different in driver career or is this another example of poor design choice/execution?

If it's by design then that stat editor is starting to look like a real necessity again...