That implies far more evidence than actually exists. The science on the age of the Earth is far more grounded in experimental results simply because, well, we live on the Earth.
This doesn't mean CDM-L is incorrect in any way, but saying that questioning it is similar to being a YEC is ridiculous.
There's confident and there's cocky, I think you veered too much in one direction there.
Personally I'm still holding out the possibility of something like MOND being true, even if it looks more and more like it will have to coexist with DM at best. That doesn't stop me from noticing that most of the people who believe in it look exactly like cranks, and many of them actually are. And I'm going to keep pointing this out where it's relevant.