I will answer that: no it shouldn't. You can have a certain level of engagement even when you strongly disagree with another country. Showing aggressive behaviour, specially taking into account the history of agression and colonisation by the West as recently as 50 years ago, will not do anything at all to make life better to the victims of Chinese prosecution. By engaging with the Chinese, the EU may at least have some leverage to politely request that the Chinese , as sovereign people, start displaying a little more respect to other cultures within their own borders.
Now, with technology, in fact things are getting worse. Everyone is required to have a cell phone, everyone is spied upon, a "social score" is maintained and if your score dips below a certain threshold, you may not travel etc.
If the EU thinks that making more trade deals with China is going to temper any of these, they're naive indeed.
Yes. Sanctions can be very effective in curbing China's outsize influence worldwide and cut their economy by half. Just embargo them as long as they persecute Uighurs and HKers.
Unfortunately that can't be done, since American and European companies were too stupid to give away their schematics and let the Chinese copy them outright, while also simultaneously reducing their indigenous production capabilities in important sectors such as rare earths mining and refining, solar manufacturing and extraction technologies.
If people counter me and reiterate stating that the EU deal is going to miraculously discipline China somewhat, boy do I have a bridge to sell to you. Maybe some gutter oil to go along with it too.