And that is your decision.
However, just because the source is Catholic does that equal wrong?
Also, is it possible to ever find an “unbiased source”? Would a pro-Mithraism website be unbiased? Would an academic who is an atheist be unbiased? There is only one unbiased source. God. If you believe in one God, that is

. If you don’t then there isn’t one because all comes from either fallible and biased men or is the bias of a particular God.
Wouldn’t it be more helpful to read each article individually and determine if there is any truth in it before rejecting it simply because it is being presented by New Advent?
The New Advent articles usually provide a lot of information and site their sources. Is this not a useful resource?