If someone wants to put the 1.18.2 version on a modrinth pack, they wont need to go to curseforge, and the pack itself wont need any overrides (since it can point to a modrinth mod and not just include a whole jar file), and it would problably make it easier to publish a 1.18.2 modpack on modrinth if the mod's 1.18.2 version is on modrinth

Sorry for the late reply. What does putting an older version on modrinth achieve?