Not necessarily true. Now that it’s legal in so many states, the long term effects and cancers associated with it are now being noted. It’s not the innocuous thing that it was always portrayed to be.
The interesting part is that the original plant really was pretty harmless to smoke occasionally.
The new genetically modified plants as well as the edibles and vapes with their much higher concentrations are likely where the issues are coming from. Same with the high dose nicotine in vapes.
Never ceases to amaze me how many can screw up something that nature provides safely.