There will never be an apology. A corporate apology is an admission of guilt. An admission of guilt opens it up to lawsuits. Through its litigeous nature, the US has evolved a culture whereby apologies and human decency are antithetical to survival.
Yev from Backblaze here -> I apologize for this mistake. We've updated the post with additional information now that we have it and there's also an apology.
On another note, have you contacted facebook to get the data removed from their servers?