i'm going to try to make this my last post on this thread.
Let's ignore dreads for a second. If you live in a society with racial divides, and are part of a discriminated against group, then there are two obvious strategies (obvious to me at least) you are likely to adopt.
One assimilation, try to minimize the differences between your self and the other race, in order to 'pass' or count as an 'honorary' member of that race.
The other is to build up cultural ties with you family and friends and to create a community (a feeling of belonging) which shelters you from the harm of the systematic oppression and discrimination.
Now taking that community and feeling of belonging, that shelter, taking it away from a person harms them.
Ok, are we back to dreads already? It is a small but obvious part of that shelter. By wearing dreads as a white person, you're not taking away the shelter but you are taking a small piece of it. (previously, i talked about Japan and 'strong' cultures, the difference being, Japanese culture is not acting as a shelter).
IF you live in a society where some people feel the need to assimilate in order to survive, while other have the privilege of expressing themselves however they like. Then you have inequality in your society. And wearing dreads as a white person - if it is an expression, if it says anything at all about you - says 'I don't care about the systematic discrimination of people of colour'.
And i've also said above, you're allowed to be an asshole if you want.
Now maybe you haven't had this conversation, and you think it means 'i'm not aware of the cultural significance of this hair style, i'm just fetishising the exotic'.
And again, i'm stating the case as strongly as i can, but i don't necessarily think this is the biggest problem in race politics in the US. The discussion is useful if it helps you to understand why this small thing is problematic. hopefully understanding this small thing will help you see bigger problems.
I don't know if i agree with the attitudes thing or not. That is like arguing that your intention is what matters, regardless of the consequences. Sure it can be MORE problematic if your intentions are worse. But when you reinforce the inequality in a system, you are not helping.
So, yeah, if you change system, if you move to Jamaican (or New Orleans if we're talking about Jazz) if you live in a place where the culture you are adopting is in the majority. It can be much less problematic (will still probably stink of privilege, and maybe with the wrong attitudes of fetishisation and entitlement, you could still be doing harm in a more direct personal way... but maybe you're not contributing to a system of oppression...)