it’s ambiguous, they said
Earning Jade Weapon Variants will reflect your dedication to Competitive Play in 2024
which makes it sound like they’ll only be available in 2024
and also
Once the 2024 Competitive Year closes, any leftover 2024 Competitive Points will automatically be converted and added to your Legacy Competitive Points, which can be used to unlock Golden Weapon Variants.
which makes it sound like legacy competitive points will only ever be for gold guns