Until people demand "proof of keys" as they did with Faketoshi.
Why would nostr:nprofile1qqs2xs05tluhtr6hpgsmqqxp04898gayjlyrjlexcrndv8j6el784xqpzamhxue69uhhyetvv9ujumn0wd68ytnzv9hxgtcl90cav even care if Coinbase fumbled his bags? He’s vocal about never selling, so it hardly matters whether he has access to the keys as long as people believe he still holds them... It's even in his creditors interest to play along and not require a digital signature. Galaxy brain move.
https://video.nostr.build/9ad56df8f70bce98fe06d4358c1cc621ad1c5b3ad9e38761dd069567467dee7f.mp4
Discussion
I mean at some point after many years of financial exposure there will be a critical mass of investors who've learned how Bitcoin works and what it offers...