It's not, it's this one: https://github.com/toadlyBroodle/nips/blob/master/69.md
Careful with this.
1. What exactly is NIP69? https://nips.be/69
2. If polls is still using kind=8, 8 is in use: https://nostrdata.github.io/kinds/
Discussion
Yes, that's RFC 69 not NIP 69 which is something else
https://github.com/nostr-protocol/nips/pull/320
I dont even know what an RFC is, just be aware there's a naming clash
Kind 6969 I think is unique tho
There's also https://github.com/nostr-protocol/nips/pull/148
Poll and vote event