Of all tech companies I'd feel most secure with Google being the stewards of my data.
Of course, they upped their game since then, but their sheer size will always make them an interesting target and they have to fail only once.
And that's only based on what we know currently from security incidents.
I don't share the same confidence for all my data that is floating around carelessly in some government spreadsheet somewhere, though.
Also a lot of websites, especially personal ones, are in violation of ePrivacy. You may not need GDPR consent for analytics, qualifying for a legitimate interest, but you still need a cookie banner when dropping cookies for analytics.
The market is clear about it, analytics have to be first party and privacy preserving.
https://support.google.com/analytics/answer/1011397?hl=en
"If all [data sharing] settings are OFF, your Analytics data is only used to provide and maintain the Analytics service."