Why doesn't Link's voice sound like it used to?

If you listen to Link's voice in Zelda Ocarina of Time, he sounds REALLY different from how he sounds in Breath of the Wild. So, what's changed in the last 20 years?

PATREON -   / thomasgamedocs  
TWITTER -   / thomasgdocs  

SOURCES
Fujiko Takimoto
-    • 【瀧本富士子さん】瀧本さんが"安定のショタボイス"に至るまでに、すっごい経...   Talks about Link being in Smash Ultimate
- https://www.cyzo.com/2016/02/post_263...

Nobuyuki Hiyama
-    • Anime North 2017 - Nobuyuki Hiyama, h...  

Akira Sasanuma
- https://web.archive.org/web/201109302...
-    • Yuu Asakawa and Akira Sasanuma Q and ...  

Kengo Takanashi
- https://seimaga.jp/item30.html Interview about his history with VA

CDi Voice Actor
-   / link_speaks_an_interview_with_cdi_links_voice  
- https://www.zeldadungeon.net/wiki/Int...

Interviews about Link not speaking
- http://nintendoeverything.com/aonuma-...
- https://nintendoeverything.com/kondoa...
- https://nintendoeverything.com/aonuma...
- https://www.zeldadungeon.net/breath-o...

MUSIC
- Music via Epidemic Sound, Nintendo