Not yet, they aren't. In fact, the exact opposite has been observed here, many times already. This is my point.

As you say, I'm sure we all hope that the situation will improve in the future, and then maybe the sales pitch for Quantum will start to look a bit more realistic. Until then, sad as it makes me, Firefox will remain relegated to primarily a testing tool on my system, because today other browsers are simply better in every way that matters.