It's really not though? All I have to do is two things spaced roughly an hour apart (from the comfort of my own home). Buying a money order or mailing a check are more involved.
If someone had seriously proposed this as a way they use traditional cash + banks, you'd be laughing at them.
I'm not proposing an alternative to cash and banks here, I'm just pointing out that, if you have Bitcoin and want to sell it for fiat currency, using an exchange is definitely the easiest way to do so, and a best practice for doing so is to hold your cryptocurrencies yourself and only move them to the exchange when you're selling them, rather than holding them in the exchange.
I sent ~8 checks at the beginning of the month without doing literally anything, because they were set up with automatic bill payment. When I get paid it goes directly into my account, again without me doing anything. Unless you're going to claim that Bitcoin is easier than literally not even thinking about getting paid or paying my bills, ease of use is not really a selling point for Bitcoin.
There are real reasons to use Bitcoin that aren't provided by traditional banking. We don't need to persuade people it's easier, especially since it's not easier.