British forum admins cutting off a couple of decades of posts to be legally compliant.

Do you have any source for that? Chinese language content is also fine

Sure, pretty much any cloud provider has detailed info.

For example, Tencent: https://cloud.tencent.com/developer/article/1396101

The are, basically, two kinds of licenses, for websites participating in commercial activity (ads, shops), called ICP证，and for smaller websites, not directly involved into commercial activity, ICP备案.

Informative. Scary, but informative.