It's sad actually that 50k users make bad choices while choosing their first wallets. I wish someone had a track of daily torrent downloads for the core wallet and see how many people are relying on the ore and or running a full node.
Unless you're already balls deep I really can't see any noobs going down that route now there are so many other options. Which makes Blockchain's claims pretty surprising too. I'd choose almost anything other than that myself. The crappiest phone wallet is a large step up in security.
Like there are hundreds of tutorials and walkthroughs while setting up your own bitcoin wallet even if it's an SPV client like Electrum. My point is, anything typed/saved on the web is quite prone to numerous attacks especially if one is a noob. Better would be to install a desktop client and it's not that hard!
Imagine if blockchain.com's servers go down tomorrow. A hypothetical situation but only the ones with their private keys would be able to recover their monies back.