Rusty did afaik yes, while Spiral did much of the NGO-level astroturf. Both representing minor implementations focused on the mobile node fantasy. I recall one such use-case in the repo discussion being Fedimint/Liquid related shitcoinery. Solving the transport of bolt11's would have been adequate if that wasn't their priority, not a whole new BOLT to poison the protocol-level. The shit that comes out of the NGO's and Blockstream have been a reliable counter-signal in every regard.