I am pretty sure the phrase "chronic use" probably would not apply to a relationship with ayahuasca... if it did it would more then likely be called impulsive or compulsive "use" by a rare, rare individual with some problems that had nothing to do with ayahuasca.

daily ingesting of ayahuasca as a supplement would be probably more homeopathic in its ingestion, it would certainly not be intoxicating, tolerances would exist for one...

but the way the word chronic is used in this context would say that my mother has a chronic use of vitamine c, or pepper, or that an elder taking asprin daily to prevent blood clots is chronic...

many people take medicines daily for various ailments... and that doesnt mean that they have a chronic use of said substance. soem folks rink a glass of wine a day for its malic acid and antioxidents... that doesnt make them a chronic drinker...