[hyperdimension]

The thing is, flags in Chrome exist only until Google decides it shouldn't be an option anymore. Then they take the choice away from you. I disabled the material "design" styled themes for as long as I could, until the flag disappeared.

[AnIdiotOnTheNet]

That's not really different for Firefox, there's just a different organization making that decision.

[vthriller]

Chrome flags though die out so fast there's virtually no point in exposing them at all, it's disappointing and frustrating almost every release.

[ekianjo]

Firefox has been killing off features year after year I dont see why you trust them to be better in that regard.