That is true. But I did not claim that. You are describing the sort of false young age that one would get using C14 improperly. That is what @SavedByTheLord has been nattering about recently. A false young age is when one gets a date of 30,000 years or so in a material that is say 65 million years old.
Again, we are not talking about marine layers with the reservoir effect. That occurs in very young material and it gets a false old date. Often it is applied organisms that died very recently and they still get an age of hundreds of years. Here is an article that make explain the effect better than I did:
Sure .. but they date corals back hundreds of thousands of years .. and yes .. I was talking about getting a date of 30k in a Dinosaur fossile .. and explained why the 30 K date is false.. wrong test method with limit at 30K .. when you hit the limit .. you can not say the fossile is only 30K The most you can say is that it is at least this old. is how you read things at the end .. when the amount of active carbon is exceedingly small .. introducing huge error at this end of the scale the closer you get to Zero..
It is a pointless nonsense to talk about dating million year old objects with C-14 .. and C-14 testing does not date these to 30K .. rather "At least 30 K" .. cause someone found Part per Zillion of organic carbon in the sample that floated in when they opened the hole ... as would be concentration of Org C in the air .. or something of that nature.