Which is better than some small no name startup service provider who might just go out of business tomorrow, but among all the big cloud providers Google is definitely the hardest to trust with longevity.
A more realistic concern is that Google might substantially change the free tier making this more expensive, or might shut down some auxiliary product that would be painful to switch from without migrating clouds completely, or that a payment might bounce for some reason and now I’m locked out of all of my google services without recourse.
Sure the odds of all of the above are relatively low, but from what I’ve seen they are a lot higher on Google than they are on Azure or AWS.