https://wccftech.com/amd-will-not-even-consider-limiting-cryptocurrency-mining-also-mentions-gamers-are-at-the-forefront-of-gpu-development/

We've seen Nvidia take a stance against cryptocurrency mining with the Ethereum hash rate limiter which has been cracked both by miners and with the accidental driver launch. AMD has just made it clear that they will not be restricting any workloads on its GPUs including crypto mining. The intended target of RNDA 2 cards is gamers and gamers will always be AMD's priority.

The design of the RDNA 2 cards isn't as well suited for mining as cards from Nvidia. That doesn't mean that they can't be used for mining rather they have a slower hash rate. In a briefing for the Radeon RX 6700 XT, Nish Neelalojanan, a product manager at AMD, explained in an interview with PCGamer why RDNA based cards aren't well suited for gaming.