Other astronomers can verify.....................
I’m sure they would be willing to, but that could be circular. Many “academic” fields operate that way.
In Biblical Studies, if a guy who can read 8 modern and 20 ancient languages has particular archaeological talents and applies these to something in the Old Testament, none of his “peers” have precisely the same skill set. It is also entirely possible that the man (and many of his peers) have read less than half of the Bible.
“Peer” reviewed material conforms to community standards, but communities have blind spots, and may accept some theories as facts and build from there—if a theory goes down, one will need to read much based upon it with caution.
At least in Economics (my first field), we were clearly after money and not truth. You want a result? Pay us to construct a model. (a fairly close paraphrase of my academic advisor)