The Lightning Network Grew by 1212% in 2 Years - River Research

"There are no public metrics on how many people use Lightning, so critics point at metrics such as node count, channels, and capacity, which have plateaued over the past year and thus give a false impression that Lightning's adoption may be stagnating or declining. Our research shows the opposite..."

https://www.nobsbitcoin.com/the-lightning-network-grew-by-1212-in-2-years-river-research/