You still have to trust Blockstream to keep all your personal information safe, and hope there won't be any leaks or attacks that will steal and sell your data.
This made me laugh and sad at the same time when I know what experience we had with Ledger. It's hard to break the link unless you convince someone to receive the delivery for you and they don't know what will it be. This way you put them in risk too.
On my watch list and I am still looking for a better way for my crypto to keep safe after ledger came up with this wired wallet backup concept. A multisig wallet is still the safest option for me.