We had poor demand for it (complexity of self hosting services for users) and we had a chicken and egg problem with hardware wallets manufacturers who did not want to implement miniscript without users asking for it. Also presigned txs are a pain in case of mempool fluctuation and most of the core improvements (package relay etc) were missing.

So we sat on a beach, asking ourself what the simplest wallet we could create that illustrate the power of miniscript and we came up with Liana.

Antoine did the work to integrate miniscript in bitcoin core and I worked with Stephan and Salvatore to have compatibility and tests with specter-diy and Ledger.