I agree with cultures changing. It's not just in our culture but has been seen in other ones as well.
Yep, not too long ago, no one were allowed to marry whites but whites because it's "morally and ethically" wrong according the majority of white societies, gay marriage were deemed evil and and considered "morally and ethically" wrong according to those that are against it especially hardcore right wing Christians, ....I can go on and on about more BS primitive beliefs of the past in many cultures and societies but those with brain cells will understand my point.
In the Hmong society specifically, Hmong marrying Laotian or Mien or other Asian ethnic groups were deemed stupid from what I've observed while living in Loas. Here in the states, Hmong that married other races are also deemed stupid by some Hmorons (
no different than the white morons or morons in any other group that still believe in their own BS primitive beliefs). Furthermore, even Hmong marrying Hmong is deemed stupid according to some Hmorons because the clans of the bride and groom don't click for some lame ass primitive reason a long long time ago.
Therefore, as you say, changes in culture cannot be halt. I see more and more mixed marriages (ethnic and/or race), I see more and more people accepting gay people and gay marriages, I see more and more Hmong married out of ethnic and race, and less and less Hmong care about things like a certain clan can't marry a certain clan, or one clan punishing another clan during wedding negotiation or any other bs primitive beliefs that happened a long time ago ...all due to the winds of change as it cannot be halt regardless of culture.
As that change continues to progress, I can see certain primitive belief and practices of the Hmong culture disappearing such as bride-head price (
also adapted from the Chinese a long time ago like the no marriage within the same last name according to some), polygamy, blood cousins being allow to hook up, bride-napping, adults marrying kids, alcohol poisoning at weddings especially when it involves minors, and in this case, frowning upon strangers with the same last name tying the knot. Those changes have been slow but it is progressing non the less because more and more people are changing from it.
The wind of change has and will continue to affect every culture. As a result, the fat will continue to be trimmed and left behind as time goes and the good aspects of cultures will move forward.