[Xposed Framework Modules] Dacraun:
There was this humongous string called, which I deleted. Afterward Youtube also works without forbidding editing shared prefs altogether.

<string name="com.google.android.libraries.youtube.innertube.cold_config_group">ChxDUEMyN3RnRkVLN2dxd1VRb08tckJSQ3pnS3dGwpShrAOsBQrhAcqOiIkC2gEwAVAAWgIQAeK4-q4DywGK_4ivA7wBCrkBeyJRVUlDIjogeyJjbG9zZV9zZXNzaW9uc19vbl9pcF9jaGFuZ2UiOiB0cnVlLCAiY29ubmVjdGlvbl9vcHRpb25zIjogIkJXUlMsVExQUixBS0Q0LEFLRFUifSwgIlN0YWxlRE5TIjogeyJhbGxvd19vdGhlcl9uZXR3b3JrIjogdHJ1ZSwgImVuYWJsZSI6IHRydWUsICJtYXhfZXhwaXJlZF90aW1lX21zIjogMjU5MjAwMDAwfX2i3LeuBAIQARIIspbShQICEAEarwPKjoiJAqgDCAIwAUosaHR0cHM6Ly95b3V0dWJlaS5nb29nbGVhcGlzLmNvbS9nZW5lcmF0ZV8yMDRKIGh0dHBzOi8vaS55dGltZy5jb20vZ2VuZXJhdGVfMjA0UABaAhAB4rj6rgPHAor_iK8DwAIKR3siUVVJQyI6IHsiY2xvc2Vfc2Vzc2lvbnNfb25faXBfY2hhbmdlIjogdHJ1ZSwgImRlbGF5X3RjcF9yYWNlIjogdHJ1ZX19EhJ3d3cuZ29vZ2xlYXBpcy5jb20SF3lvdXR1YmVpLmdvb2dsZWFwaXMuY29tEg15dDMuZ2dwaHQuY29tEhl5dDMuZ29vZ2xldXNlcmNvbnRlbnQuY29tEg93d3cuZ3N0YXRpYy5jb20SD2NzaS5nc3RhdGljLmNvbRIgbXlwaG9uZW51bWJlcnMtcGEuZ29vZ2xlYXBpcy5jb20SC2kueXRpbWcuY29tEhB2aWRlby5nb29nbGUuY29tEg1zLnlvdXR1YmUuY29tEg93d3cueW91dHViZS5jb20SG2dvb2dsZWFkcy5nLmRvdWJsZWNsaWNrLm5ldCIKspbShQIECAEQAfKQnPYDBAgAEgDS6cr2A_ADEAAwAFAAWABoAHAAeACAAQCIAQGQAQCgAQCoAQGwAQC4AQDAAQDIAQDQAQDgAQDoAQDwAQD4AQWAAgCIAgGQAgCYAgCgAgCoAgCwAgC4AgHAAgDIAgDQAgHYAgHgAgHwAgD4AgGAAwGIAzKQAwCYAwCgAwGwAwG4AwHAAwDIAwDQAwDdAwAAgD_gAwHoAwHyAw5zZWFyY2hfeW91dHViZYAEAIgEAJ0ETI7jP7AEAeUEAABAP-0EAADwQvAEAIUFAACAP6gFuBfYBQDgBQDoBQD4BQCABgHyBhoIASUAAABALZqZ2T84AUAATTMzsz9VZmaGP4gHAaAHAagHALgHAcAHANIHA2V4b9IHFWNyb25ldF9tZXRhZGF0YV9jYWNoZdIHEmNyb25ldF9tZWRpYV9jYWNoZeAHAPgHAqAIAagIAbAIALgIAcAIAcgIAdAIANgIAOgI____________AfAIAPgIAIgJAKAJAMAJANgJAOgJAfAJAfgJAIgKAbgKAcAKAMgKANgKAOAKAOgKAIgLAZALAKALAKgLAbALAcgLANALANgLAeALAOgLAPgLAIAMAJAMAbgMANAMFOoMCwgBEIgOKAAwADhL8AwA-AwBgA0BiA0AqA0A0A0B2A3gEvANAIgOAJgOAKAOAKgOAOqk-_gDqQEKJghYEiJjb20uZ29vZ2xlLmFuZHJvaWQuYXBwcy55b3V0dWJlLnR2CikIVRIlY29tLmdvb2dsZS5hbmRyb2lkLmFwcHMueW91dHViZS5tdXNpYwoqCFYSJmNvbS5nb29nbGUuYW5kcm9pZC5hcHBzLnlvdXR1YmUuZ2FtaW5nCigIVxIkY29tLmdvb2dsZS5hbmRyb2lkLmFwcHMueW91dHViZS5raWRz-sDB_AMCCAHC5vGBBBQIABICCAISAggBIAEoATgAagIIAJrZ_oIEsB3Kt7_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_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_AC9AP4AgGwAwG4AwHQAwDQA-gH0APoB9AD6AfQA-gH0AOYddADmHXQA5h10AOYddAD4NQD0APg1APQA-DUA9AD4NQD0APgpxLQA-CnEtAD4KcS0APgpxLQA-CnEtAD4KcS0APgpxLQA-CnEtAD4KcS0APgpxLQA-CnEtADoPc20AOg9zbQA6D3NtADoPc20AOg9zbQA6D3NtADoPc20AOg9zbQA6D3NtADoPc20AOg9zbQA6D3NtADoPc20AOg9zbQA6D3NtADoPc22AMA2APoB9gD6AfYA-gH2APoB9gDmHXYA5h12AOYddgDmHXYA-DUA9gD4NQD2APg1APYA-DUA9gD4KcS2APgpxLYA-CnEtgD4KcS2APgpxLYA-CnEtgD4KcS2APgpxLYA-CnEtgD4KcS2APgpxLYA6D3NtgDoPc22AOg9zbYA6D3NtgDoPc22AOg9zbYA6D3NtgDoPc22AOg9zbYA6D3NtgDoPc22AOg9zbYA6D3NtgDoPc22AOg9zbYA6D3NuADAbL2y5sCCAgBIAI4AUAByorMmwICCAGK-9eeAgQIABgA8qDaqQIICAEoAzgBaAH6stSzAl8KGgoWYW5kcm9pZF92b2ljZV9jb21tYW5kcygBEAEYADgAQABIAVABaAF4AYABAagBALABAMABANABANgBAegBAPABAPgBAIACAIgCAJACAJgCAKACAbgCAcACAMgCANqAxMgCCAoCCAISAggCwtXD3QJYCAEQARgBIAEwAUABSABQAVgBZQAAAABoAXIXeW91dHViZWkuZ29vZ2xlYXBpcy5jb21yEnd3dy5nb29nbGVhcGlzLmNvbYABAYgBAJABAJgBAKABAbgBAPrIzuICgAIKIGzAX_6vZ0ygTSVMyVkyVeH_XH4vMsrxyOaqhInOU3xfEIDSHxo1AGXCFGw-_VYiGa6WEO1BJh_1M49FLltK6Mh-VRSJG47vJvzIav12vrAErU0-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-e6qAyIIPBIGENAFGMgBGgwQ0AUY9AMiBAgDEDwoeEIGCAEQABgK0sSwrAMICAEgATICCAGyx4WyAwIIAfrRjsMDBAgBEAH697nVAwIgAfKe_t8DBggAEAAoAOLY2-ADAggBwoDI4QMLCAEQARigOCAAKAHC76ziAwQIARgBkq_S7gNMCAESPQovaHR0cHM6Ly9tLnlvdXR1YmUuY29tL2FwaS9zdGF0cy9hdHI_bnM9eXQmdmVyPTIaAggBGgIIAhoCCAMYCiIFENAFGB4oAfqY2e4DAggB6oX6hAQCCACy_MTABBAgACgAMPABMOADQABIAGAAirXR3gQXWACAAQGIAYCAgBmQAQCYAQCoAQC4AQDy8cjrBAQaAggAivvo8QQKGAEoADAESAFQALrHg_QECggAEgYIABAAGADCyauLBSQKBggAEAAoABoICAEQ4NQDGGQiEAgAEJBOGAAgACg8MAA4kBzqs7iUBRwIABAAGAAgACgAOABAAEgAUABYAGAAaABwAHgAsvq3wgUCCAA=</string>

Still no clue which setting this impacts in particular besides the first part being comprehensible.