of course this is a good sign for crypto, because as we know amazon is one of the biggest companies in the world, so if Amazon starts participating in crypto, I'm sure it will make people trust again to invest in crypto and people who haven't invested in crypto will start to investing in crypto, so that the market cap will increase again and crypto prices will also increase.
If a big company like Amazon do that, I'm sure it will have a big impact on crypto. It could be a few days after this crypto is getting crowded and search engines like Google will be busy handling various searches for cryptocurrency information. I hope this is more directed to a good sign of crypto.