DeFi projects seem to be well known in the cryptocurrency circles surveyed by CoinGecko, but usage is somewhat lackluster, especially for lending protocols.
Source: https://cointelegraph.com/news/many-people-know-about-defi-but-few-of-them-use-it
Many People Know About DeFi, But Few of Them Use It
May 20, 2020
CoinTelegraph