It is extremely unwise and very much against the founding spirit of the Internet to allow one company this much control, especially one that has shown itself to be censorious in the past.
https://www.bbc.co.uk/news/technology-47278362
Despite the ban being due to a violation of YT terms of service they lost their entire Google account. > "But because my Google account was terminated as well I didn't have access to my email so I couldn't see what happened."
System errors - https://www.reddit.com/r/GooglePixel/comments/7nrx07/google_...
We're twenty years in so likely there are actually thousands of legitimate reasons, the problem is their system seems designed to dismiss any evidence to the contrary so a false positive is a lifetime ban too.
Something is really fucked up if getting one of your Google accounts banned is a "nightmare".
To everybody who's reading this: make the necessary arrangements to make sure getting one of your Google accounts banned is not the end of the world for you.
Your advice is good tho. Diversify as much as possible so that any one company can't ruin your life.