Because Google broke how websites load in Chrome specifically to destroy adblock. They can punch holes in any adblocker that uses the Chromium web rendering engine. However Firefox does not use any Chromium code and still works the way it always has. uBlock (use uBlock Origin instead) will likely still work somewhat on Chorme, but would be helpless to block some ads.
Because Google broke how websites load in Chrome specifically to destroy adblock. They can punch holes in any adblocker that uses the Chromium web rendering engine. However Firefox does not use any Chromium code and still works the way it always has. uBlock (use uBlock Origin instead) will likely still work somewhat on Chorme, but would be helpless to block some ads.