Can confirm that the shiny rate is 1/fair that 30k is just a scary number like in those horror stories that will make you believe the boogeymans in your closet
theres alot more out there such as "random shit pokemmo players say" but pretty sure it got butchered or just around a year of bullshittery got it lost from advanced search
my first 2019 shiny (which was spheal) was about 6 months after my last 2018 shiny, it was "one of" my greatest shiny hunt depressions since my very first in 2016 which ended up fleeing
from most cases like these they just halt the berry progression entirely for server down so they will remain the same exact state as before the server goes down. im not 100% on this though
they should have just held off telling us sinnoh was the next project after we got unova in the first place, just let us rot till the 1st pts was done like they did with unova