I’ve got a fair few and can’t think what I’d want 5ghz for, but every time I ask why people want a particular feature I’m impressed with that people are doing.
Now in my use case I needed to deploy some cheap wireless devices to do things like queuing, automation, camera tally lights, etc. but couldn't because of that restriction, since many devices (Raspberry Pi, ESP32) only supported 2.4GHz. I ended up using the RTL8720DN or devices that contain it such as the Seeed Wio Terminal.
This lets you go 5-only, and that's big for some settings.
I live in an apartment. Not even a super dense tower or anything, just a townhome style complex where everyone has their own garage and front door. From where I sit right now my phone can see nine networks on 2.4G channel 1 alone. 6 and 11 are around the same.
I want everything I can get running on the 5 GHz band and in the future the 6 GHz band. I've been holding off on new APs to upgrade from 802.11ac until I can get ones that support 6 GHz.
What measurable benefit do you expect from moving to 5Ghz?
Networks simply existing causes traffic, the beacon frames that advertise SSIDs are always transmitted at the lowest speed supported by the network, which on 2.4GHz consumer gear almost always means 1mbit/sec 802.11b. (this is the one actual real world benefit to disabling SSID broadcast, eliminating the small interruptions caused by beaconing).
Also keep in mind that 2.4GHz interference isn't just WiFi, it's also Bluetooth and decades worth of cordless phones, RF remotes, gamepads, keyboards, mice, etc.
Anyways, I use Ubiquiti gear at home, and one of the nice features it has is logging channel activity. On 2.4GHz channel 11 the utilization never goes below 25% and hits 75% regularly during peak home WiFi times. I have three smart lightbulbs and a bed on 2.4GHz at the moment, these devices have literally double digit megabytes of activity over months, so the traffic on the band isn't me.
On 5GHz channel 161 on the other hand I have three laptops, two tablets, two phones, two TVs used almost exclusively for streaming, and with all that my average channel utilization is below 10% with the spikes beyond that base level almost entirely correlates with activity of my devices.
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I don't know what the actual real world difference is, but it's not exactly hard to make the case that moving devices to bands with shorter range and more available spectrum is a good thing for reducing the inadvertent interference caused by modern consumer tech.