I graduated from high end audiophilia quite a while ago. I don't have speck of it left in me. Perhaps not true of everyone. I'll post something when I have settled in with the AVR.
I think it is like rolling the dice. There are excess reports of failures of those low end made in China receivers. We have had reports here over the years of issues with those. It is hard to imagine that you could build a quality device of that complexity at that price. But you might be lucky.
I would watch the heat issue carefully, and see how hot it gets. The processing of newer receivers is higher than the older ones, and also the biasing of the output stages, will make a big difference to the heat production, even if it producing no sound. So there is no guarantee that the heat output will be comparable to your previous one.
Anyhow let is know how you get on. But I have to say, that would not be how I would instal for longevity no matter how quietly I was going to run it.
As I say, I would certainly keep a close eye on the unit during its initial period of operation.