Yeah that's exactly what I'm saying.
I'm saying players can make adjustments and sustain improvement. Obviously I used a player who's adjustments made a major change (I could have used Zobrist at age 27), but there are players who work their tail off, study film and made steady improvements as their careers go on. Pillar's doing it too. Personally, I love these types of players - the ones who squeeze every ouch of talent out of their bodies.
Goins makes changes, shows tangible improvement in the 2nd half (wRC+ of 108), is huge for this team, has a bad playoff series facing a ton of lefties and BAM - the "I told you so" guys come out in droves like they win a metal.