That was the case in the past but things have changed to such an extent now.
In congregations that we are familiar with most of us feel we love the Bibles promises and certainly have hope that they have some truth to them.
We so want the Bibles promises to be true and talk as if we have no doubt but we all do have doubts about JW interpretations.
These days JWs are openly talking about 1914 is probably not true, birthdays doctrine may have new light soon and shunning will have an updated understanding ect.
As long as you can’t be accused of causing division in the congregation then you can openly express doubts about the governing body.
The vaccine is the best example of this as now most people know that it was not safe or effective which means the governing body got it wrong and they were the ones causing divisions as they should have stayed neutral