They did not develop any lightning implementation,
??
rusty russell of blockstream employment
https://blockstream.com/team/rusty-russell/ Rusty Russell
Infrastructure Tech Engineer
..After 14 years as a senior developer at IBM, he took a six-month sabbatical to work on cryptocurrencies. ..
while devoting most of his time to exploring the emerging frontier of Bitcoin development.
is not making lightning network software??
https://github.com/ElementsProject/lightning/graphs/contributors#1 rustyrussell 1,281 commits / 335,340 ++ / 71,321 --