When Omicron reaches the majority of new cases the growth rate of the total number of new cases will accelerate. Until then, the doubling is masked by the large Delta background.
Lying is simple, and even then Government routinely fucks it up. I doubt they have the capacity to convincingly forge the data required to generate that website.
Not true. You can trust your own observations and thought process results and can make your own small statistics from anecdotes coming from your acquaintances.