I think just answering this one will save me the trouble of explaining why suggesting pitch accent is important is harmful to people that are not fluent yet.
You made very important distinction that I tried to convey using not precise enough wording. It is 100% true that tones are not part of Chinese accent and what is confusing is thinking there is some kind of link between Chinese tones and Japanese pitch in terms of functionality. There is non.
Here you have some basic info how different accent works in Mandarin: https://resources.allsetlearning.com/chinese/pronunciation/Accent
But people do not run around claiming accent is important in Chinese. Tones are scary enough.
So what accent does actually? It is just weak status indicator. It showing you background and education level, but not strongly enough to make you look silly (unless you have for example very strong accent “slams” accent). It is as the word is suggesting: just an accent. A cherry on the cake. If you are very status sensitive and like to be posh then by no means go for it.
But first it would be reasonable to master Cambridge accent in english which serve the same function as Tokyo accent in Japanese. If I remember correctly only 3% of British people have it, even less people in US. I know more foreigners with it than natives…
So just to make things clear: Japanese is not tonal language. it is pitch-accent language.
In english you have as well a lot of accent mess that can change a meaning in theory but does not in practices. For example “been” vs “being”. Do you us long “e”? Do you have to different “n”? It depends on your accent. I say it the pretty much same way and never had a problem. How about “two” “to” and “too”? There are different ways to accent it. I say it the same with no problems again. How about “the” and “the”. Are you even aware that there are two way to say it and they have two different function? It is feature of Cambridge accent. Again: it is never problematic.
So please don’t confuse people suggesting the feature that is there to make you “posh” is in any meaning of this word necessary. It is not true, and it scare people away. Just like tones do in Chinese. Japanese phonology is very beginner friendly. No need to suggest pitch-accent is like kanji where it is clearly not.
I think I say everything I have to say to:
cheers
If you find this feature interesting then enjoy you journey.