Think about what I'm quoting...
Dunno, pretty much organised all speakers for next month's nostr:nprofile1qqs8c7axt2cuph2jlxl7s4hyamu9nqw99dhvsctevxxq4z538pm4n2spzpmhxue69uhkummnw3ezumt0d5hsmrdhd7 BWEST Conference through Nostr DMs. 
Discussion
You're either suggesting privacy is poor or simply that DMs are working and widely used I guess. Privacy depends on DM NIPs utilised, client dependent. Tbh, I was mostly promoting our Conference Peter ;)