You are conflating one problem with another. Chip damage and concentration checks are still working as intended and it is the changes Larian has included and made to the system that are giving you grief. Rather than change the system further why not look to remove these alterations as they are the source of the problem?
Yes, needing to make CON checks for taking chip damage is normal. I was pointing out that because there are many additional sources of chip damage in BG 3 compared to pan and paper, that increases the number of CON checks you need to make. The more checks you make, the greater the chance you fail them.