From January 2024 Google will allow adverts on financial products that allow investors to trade shares in trusts holding large pools of digital currency known as "Cryptocurrency Coin Trusts". With this change in policy crypto coin trusts could run ads on Google provided they register with the SEC. This subtle adjustment of ads policy is an indication that they are preparing for Spot Bitcoin ETF.
This is called embracing change. Every corporate repositions their stand from time to time. Google is no exception and the executives of Google very well understand the gravity of repositioning. Does the reason why Google is still the disputed leader of the internet ecosystem.
Also if blackrock gets the approval to run a bitcoin ETF, Google would want to capture the advertisements that these fund managers are going to run. That is why they are revamping their policy. That's fine!