Do you think if we fully isolate China it will became as Iran but with second world economy resources? Is that will be safer time to live?
The point is that "good fences make good neighbors". China can go whatever direction she wants with her own society. Obviously, China's current direction - state capitalism, lifetime presidency for Xi, totalitarian Party control over all aspects of life, a 1984-style techo-authoritarian surveillance and control state - is totally incompatible with European Enlightenment values which still broadly prevail in the West. To make matters worse China is an extremely formidable opponent, leveraging the combined effort of all elements in her society to carry out a permanent Total War propaganda/influence offensive abroad, with the goal of dividing and weakening the West.
At some point a people and a culture need to stand up, draw a line in the sand and fight to defend it, otherwise they will simply vanish from history.