I don't understand why people think that if their internet is faster, they will use more data? Movies and media consume the same amount of data whether it's LTE or 5G. There are only so many hours in a month. You can't be mass-downloading stuff to your phone. Email, web, etc., still the same amount of data, just faster. Like if the city put bigger water pipes in the street outside your house, are you going to use more water just because the pipes are bigger?
Please explain how faster internet is going to make you use more?
There are two reasons:
1) YouTube and other streaming services adjust the streaming rate to fit the pipe. They actually send less data over a low-bandwidth or high-latency connection.
2) If people spend less time waiting, they can spend more time consuming bandwidth.
Of course, a lot of people just assume 2x more bandwidth = 2x more data. For other than streaming, if you do the same things, you consume the same data.
But there’s another confusion here, originating in the OP. The issue here isn’t 5G (a cellular protocol), but 5 GHz Wi-Fi. 5G does enter into it, in the sense that a faster WiFi connection is more likely to matter if you have a fast cellular connection. But, except when there’s a lot of interference, a faster WiFi connection won’t have any impact on how fast your overall connection to the internet is (and thus, whether you get full bandwidth streaming, or spend a lot of time waiting…)