I agree. If your notes become 1:1 content to advert that'd be a turn off. But there is definitely room for a sponsored ad worked in.

nostr:nprofile1qqs2gndun24r2utk5l20tscsdprw5zttvm0qk58w8xhl2ja2kmzt7jcpvemhxue69uhkv6tvw3jhytnwdaehgu3wwa5kuef0dec82c33x5ehsmt90q6ry7p5vd5xge3hx5mksupnwym857rpvaukk6m9dvmhqer8wa6hwepsxu6rjd35v34hj6rp89ensvnj096ns0mzwfhkzerrv9ehg0t5wf6k2qg7waehxw309ahx7um5wgkkgetk9emk2mrvdaexgetj9ehx2ap05npa2h ? nostr:nprofile1qqswp94gnm4epqsgjkndl4lnd8krzdj5u4mzuppdtxksdymkty63g7gpz4mhxue69uhkzem8wghxummnw3ezumrpdejqz9mhwden5te0ve5kcar9wghxummnw3ezuamfdejsmux084 ? nostr:nprofile1qqsx845ex2wm3cu9d8e93xm282nmpu33emyr5aufu20s5wt8sx7h6usppemhxue69uhkummn9ekx7mp0qywhwumn8ghj7mn0wd68ytnzd96xxmmfdejhytnnda3kjctv9uafthxe ?

I definitely think keeping it NOSTR only would keep with your ethos and branding your going for.