In 2021 they praised the device as having good performance at a price point that is ~$30-40 less than what Google is launching their device at. The second gen of that Fire stick is selling for $40 right now on sale with Wi-Fi 6E. I saw some benchmarks posted of this chip and some others (with a Pixel 6 thrown in arguing that using a bunch of older Tensor chips might have also been a good idea.) And also a Shield TV which is 5 years old at this point.

Single core:

Fire Stick - 140

Shield TV - 279 (99% faster, twice as fast).

Tensor G1 (Pixel 6 Pro) - 1007 (619% faster, seven times faster)

A15 (Apple TV) - 1684 (1103% faster, 12 times as fast).

Multi-core:

Fire Stick - 491

Shield TV - 971 (98% faster, twice as fast).

Tensor G1 (Pixel 6 Pro) - 2541 (418% faster, five times faster)

A15 (Apple TV) - 4489 (814% faster, nine times as fast).