See Fig. 1, Downloads per month, here: https://lenr-canr.org/wordpress/?page_id=1213
The trend line in this graph so far is remarkably stable and symmetrical. It peaked after 11 years in 2013. If present trends continue, it will fall close to zero around 2024. The bottom graph, Google Trends Interest over time, shows that interest in cold fusion is asymptotically falling to zero.