I knew as I wrote in OP.
Many mixers were seized but it is a first time I read documents mentioned Bitcointalk directly like this by Chipmixer seize.
I only did not know any mixer seize with reports in which mentioned about Bitcointalk.
I do not know if it was a coincidence, but Bestmixer.io & CM was seized at the same at March 15
This is what I don't know. Maybe coincidence.
I read some posts and some posters did not read previous posts before making theirs.

Please don't derail discussions to gambling. It is off topic.
Additionally, those companies have licenses as well as game providers so they are not same as mixers.
Regulations might become stricter but it is not strange. I only ask this question and kind of proposal as prevention solution.
The admins don't have to keep forum alive as well as keep signature industry here. So please don't try to post, claim weekly bonus and think your posts are valid. Imagine you think you are right with your posts today and months later, forum is seized. Don't cry.