Feel free to join future meetings! I guess we should link to this instead, which also tells you when the meetings happen: nix.dev/maintainers at master 路 NixOS/nix.dev 路 GitHub. And while I can guarantee to generally join on Thursdays, I won鈥檛 be there on Mondays 
You鈥檙e probably confusing this with the early Nixpkgs Architecture Team meetings which were recorded, though that was also stopped because sometimes one doesn鈥檛 want everything you say to be set in stone forever (this was discussed here).