I did some research on this. It might not be as clear as everyone seems to state here. Evernote''s site says, "In late 2016, we began migrating the Evernote service to the Google Cloud Platform (“GCP”). Customer data that we store in GCP will be protected using Google’s built-in encryption-at-rest features. More technically, we use Google's server-side encryption feature with Google-managed encryption keys..." https://evernote.com/security
UpNote's says, "UpNote stores data on the Firebase server (which is a service provided by Google). The Firebase platform is certified to major privacy and security standards and fully supports the EU General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA). Firebase encrypts your data in transit using HTTPS and encrypts your data at rest....Does UpNote support multi-factor authentication (MFA)? Yes, you can use the "Sign in with Google" or "Sign in with Apple" method when creating or signing in to your UpNote account. These methods support MFA by default." https://getupnote.com/support.html
PC Mag article in Dec 2023, "The UpNote team is based in Vietnam, and says that all data is stored on a Firebase server in the US. Google provides Firebase service, which encrypts data in transit using HTTPS and encrypts data at rest." https://www.pcmag.com/reviews/upnote
I feel fine using UpNote for non-password information. I have loved the interface. I could not see some of my note attachments in Evernote and the syncing was unreliable, not acceptable for me and what I do. Thanks for the opinions here, as it caused me to do my own research and feel even better about my decision.