You could move from privacy.resistfingerprinting to privacy.fingerprintingProtection and override the changes you want with privacy.fingerprintingProtection.overrides such as +AllTargets,-CSSPrefersColorScheme.
I guess to enable Netflix you would have to enable DRM which is probably somewhere in LibreWolf documentation.
For the available overrides, see https://searchfox.org/mozilla-central/source/toolkit/components/resistfingerprinting/RFPTargets.inc although you may have to guess what they do based on the name.
I tried to, but both Vivaldi and Brave had issues I couldn't get over and in the end I decided to have a time out by switching to Firefox ESR with custom policy and autoconfig.
Whatever happens in April will probably take time to land on ESR so I will hopefully have plenty of time to adopt about:config changes or actually switch to another browser.
I don't feel like switching back to LibreWolf, since I already used it ages ago and learnt to make my current setup with upstream Firefox, so it would be kind of pointless and what would I do at Chromium? Three months and ManifestV2 is permanently killed and what extension doesn't say to run better on Firefox? I have been observing at least uBlock Origin (manifest V2), Privacy Badger (v3 in Chrome) and NoScript (also v3) and I think at least GitHub discussions said they all have shortcomings on Chrome.