One of the biggest advances in electronics in recent years is that we have stronger processors with less dissipation of heat
which made it possible to build devices without cooling and in small boxes.
And not only processors but also other components and power supplay based on AC-DC / DC-DC converters without large transformers and components
with high temperature dissipation.
These two things enabled the long life of the device with and without active cooling.
And that cooling is limited only to a couple of components
depending on the device.
Which practically means that the chance that the device will be broken due to temperature
is far less than other factors.
If you remember a few years ago almost all receivers, computers and devices
they had active cooling with the fans.
That's not the case anymore.
We have a lot of devices without a fan , and all VU + 4K receivers.