We are now at the point that any further attempt to eliminate racism by force comes at the cost of suppressing accurate perceptions of reality. At what point would it stop being worth it to you to get rid of some small additional number of racists if the cost is massive damage to free speech and rational investigation of reality?
Also, are there really "fewer racists than ever" now? Anti-white racism has been on the rise the last few years. I think that progressive dogma now fuels racism more than it suppresses it, not just directly - by supporting anti-white racism - but also indirectly, by motivating a reactionary rise in white nationalism. The growth of white nationalism in the last few years has largely been driven by demographic shifts, but it has also been significantly fueled by progressive anti-white racism.