That is correct.Never heard of it for tobacco but I have read about if for the wacky backy stuff.
Burping is done as part of the drying and curing process to allow the cannabinoids to develop fully.
The main purpose of burping [to my understanding] is to mainly allow the escape of any excess moisture.
Tobacco on the other hand, needs to be at a suitable case [moisture level] before it's jarred, negating any need to burp.
It's probably already been said but from what I've read, tobacco that's been jarred to age should not be opened until ones ready to smoke it.