You can lose your Google Voice Number

https://support.google.com/voice/thread/351418232/so-upset-lost-my-google-voice-number-after-inactivity-can-t-reclaim?hl=en

Not sure if only I was unaware... but this can be concerning for people that have a primary number on Google Voice

I was aware but I would've sworn it was one year of inactivity and the warning emails started at ~ 9 months inactive.
Maybe it used to be a year?
Anyway, good to know, thanks for posting this.