Hosting and providing Chinese models wouldn't be the same as doing business with the sanctioned entities though, you don't interact with them in any capacity if you only use the weights and don't sign any contracts.
So they get posted to hugging-piratebay-faces.ru or whatever by a mysterious Twitter account. 100% totally above board companies won't touch it, but the number of companies that wouldn't exist were it not for hacked copies of Microsoft office and Photoshop and shared logins would surprise you.