Mmmmhh, it will be interesting to see how this develops. This new Change in Advertising Rules also affects other financial Services, not only Crypto.

I'm sure there is already a workaround in the works somewhere...
Also, it will do some good an clean out the Cryptospace a little. And those Projects that are serious and actually have something to contribute will still strive. With or without Google Ads...

The official Google Statement can be read here: https://support.google.com/adwordspolicy/answer/7648803?hl=en