cipres on Nostr: I've seen the new nip17::extract_relay_list and nip17::extract_owned_relay_list ...

I've seen the new nip17::extract_relay_list and nip17::extract_owned_relay_list functions to parse kind 10050 events, nice. Newbie question: why is it necessary to enable the "gossip" option to be able to have NIP17 relay list support in nostr-sdk ?