Locally, in northern California I have seen/heard a drop in JW and mainstream church attendance especially in person attendance. (Exception: a new creepy local new-age charismatic/Pentecostal group: "Bethel church" 11,000 and growing mega church(Kundalini yoga/sex combined with prosperity gospel, Trumpism, guns, rock music, dancing, glitter, speaking in tongues, and faith healing).
For me this paragraph sums it up regarding Jehovah's Witnesses: " ...Smith described organized religion to me as having become a “polluted” idea in the American mainstream, because of the publicity around sex abuse scandals and financial malfeasance in many different faiths in the ’80s and ’90s as millennials came of age. “The scandals violated most of the virtues believed to make religion good,” Smith wrote. “They demonstrated that religion did not make people moral, did not help its own leaders cope with life’s challenges and temptations, did not promote social peace and harmony and did not model virtuous behavior for others.” Those scandals helped destroy religion’s credibility — and led to millennials no longer believing that religion could be a “glue” that held America together, Smith’s research showed. "
NYT https://www.nytimes.com/2025/03/12/opinion/decline-religion-america.html?unlocked_article_code=1.304.DpxA.pGC1Fq6eB8YA&smid=url-share