Radiometric dating only works if you know the starting conditions
I find Carbon dating less problematic in it's assumptions because you can assume a certain amount of carbon isotopes in the atmosphere being the same in the past as today but I did not say that it is not problematic
Other dating methods are more problematic in my opinion
Let's say you have Uranium turn to lead and try to find the date by the ratio of Uranium to Lead
What was it before 100% Uranium
If matter was not created out of nowhere then something that once had a certain percent of Uranium had to exist before it had that certain percent so if you assumed it started 100% Uranium and turned to lead then you could guess a date but if it was 100% Uranium then it must have been something before it was 100% Uranium and something before that and so on
Also you could start at some other % Uranium
It is very arbitrary because you do not know the starting point
For example an object could have had some lead in it that was already there and did not come from Uranium as it's starting point
You can not really know how much lead it started with and how much Uranium unless you know what it was like in the initial condition it was formed
And if you witnessed it in the initial condition it was formed then you would already know how old it was from when it was formed and not need a dating method to date it
