There is a speculative (investment) presence in the current bitcoin discussion scene. Only known and used by a few people.
If bitcoin really wants to become a universal currency payment system, how can we optimize the design for ease of use and make it easy for most people to get started easily and with low risk?
In terms of being easy to use, it all depends on the wallet that you're using and has nothing to do with Bitcoin itself. There are lots of cryptocurrency wallets out there and some are complicated in design and most people wouldn't understand how to make use of it. There are also wallets with a simple interface and can easily be understood by even newbies.
Most decentralized wallets are usually hard to understand for newbies, but if you check out Trust wallet, it's the only open wallet that I know that has a clean interface. Other wallets that I do recommend people use are the Blockchain wallet and Coinbase wallet (there are still many of them and you can do your research). So being easy to use has nothing to do with Bitcoin.