Obviously the Chinese government did not have a problem with this component. There are enough characters to prove it.
If they had changed all of the phonetic components 詹 to 旦 then I would have no problem, but no, they could not. You cannot change 儋 to 但 because it already exists.
A traditional learn can go from from 擔 to 担 much more easily than a simplified learner can go from 担 to 擔.
Changing character components has consequences. It changes the spoken language(with time), it changes the Chinese culture, it removes something that the people of China have been living with for millennia.
Just because the Chinese government simplified some characters and a good portion of Chinese speakers in the world use them does not mean that you have to. You can easily understand simplified characters if you learn traditional ones. You will understand why and how words came to be. You will have a better understanding of the Chinese language than most Chinese people do.