I went somewhere some years ago (can't be more specific) and one of the women I was having a chat with asked if I could plait her hair the way I did mine. It was a meandering conversation that just happened to go in that direction and I don't think she expected me to agree. Sure, I said and she proceeded to ask if I could do it right then. I was happy to and I started doing her hair. In the process another lady joined us and begged me to do the same. Of course I agreed and by the time I was doing hers, 2 or 3 other ladies had joined and asked and then more joined to see what all the excitement was about and I ended up plaiting 7 ladies' hair that afternoon. Just casual 3 to 4 cornrows. My fingers were numb but their happiness was palpable and that was more than enough for me.
These ladies came from different backgrounds including Eastern Europe, Asia, Middle east, etc.
Personally it wasn't a big deal as braids and plaits have been a major part of my life as well as hair straightening, etc but to them, it was something new (to some), fun, a beautiful experience, etc.
I came back the next day and the next and most of them were still wearing the braids. By the end of the week, the last woman standing was the first one who wanted the braids. Ha. Some of the braids were unravelling but she held onto it. One of the other ladies told me hers had unravelled so she took them down. I offered to make a fresh one for them.
I had no problems with others - they had enjoyed what they wanted for as long as they wanted to enjoy it. It's their choice to keep it or not just like it's their choice to ask me in the first place to plait their hair.
So for me this was just people enjoying what they saw and liked. Claiming "It's my culture, no you can't have it" didn't even cross my mind.