Think of it this way. You have a static address for donation on your website. Now everyone can see how much donations you received and where you send that Bitcoin.

But if you set up a nostr:nprofile1qqs22d4tralncqfnh2kmmarjkxk8449hwnk5xtqe3y5yry6hy7ytegqpzemhxue69uhk2er9dchxummnw3ezumrpdejz7qgcwaehxw309ahx7um5wghxvmt59emkj73wvf5h5tcpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsymkvl9 for example which generates new address for each donation, its kinda hard to trace how much you actually received in donations.