Is it good to let Firefox "securely route my DNS requests ... to a partner service"?

I know very little about DNS over HTTPS. I have been hardening Mozilla Firefox following the manual guide ( https://chrisx.xyz/blog/yet-another-firefox-hardening-guide/ ) on PrivacyTools, but this alert that they are doing DoH automatically has been on Firefox ever since install (only a few hours).

I read a bit in the Learn More and elsewhere, and DoH seems nice, but are the services Mozilla sends to reliable? Is it better to go without it for now? Should I have my own DoH …

dns firefox partner privacy requests service