For Coindesk to even ask this question, they must be either stupid or trolling the Bitcoin Core team (again).
And as for "doesn't fit on a smartphone", again, either they're stupid, or trolling. Modern phones have the storage and the bandwidth needed to handle Core, but possibly the processing power is still not ready. And if Coindesk knew anything about the topic, they'd also know that Core can prune the blockchain down to about 2GB.
The simple fact is, that the Core developers are the most important part of the ecosystem, producing the majority of the innovation in the development space. It's not as simple as just being a wallet, Core is the software that literally makes the Bitcoin network tick. So this Coindesk headline is essentially a casual attempt at hurting Bitcoin. As can be expected from Coindesk.
Carlton, Why are the Coindesk so against the Bitcoin Core developers? If they get someone else to take over, they will still have the same
problems, they discussing here in this article. This big block VS small block debate and stabbing at each other are getting old now. I have
64 GB memory on my Smart phone and I can gladly handle a pruned 2GB Blockchain without any hassles.