The Air certainly can be used for more than just web browsing and word processing. Although I doubt a fan would ever need to make it into the air. 90% of the original performance at 75% of the power in 30m+ workloads is like more than reasonable compared to a properly cooled mbp with the same chip. You would still have to either lose battery or increase the device thickness to compensate, at that point isnt it just a mbp?

The only thing would be to see if this can become the fan in the pro rather than adding a fan to the air that doesn’t need it.