good advice, don't rush to the finish line, enjoy the plant's finale~
(plus if you google horticulture work--peer reviewed studies-- on actual ethylene application, its a waste of effort used on cannabis unless your doing it in a"lab" like setting)
cheers
concerning "maturity"-- i am assuming your referring to any changes concerning the molecules that get you high/feeling good/etc, then my .2s is yes.
tho instead of using "maturity" as the word i'd just simply imply "changes" (in-regards to environmental factors, genetic variables, a myriad of...