Regarding the "tin foil Hat" wearers concern of government monitoring:
"In early 2020, the FBI learned through social media that a group was discussing a violent overthrow of certain government and law enforcement components, according to the criminal complaint obtained by Fox News."
This is from: https://www.foxnews.com/us/michigan-gretchen-whitmer-plot-abduct-kill-assassinate
Yes, they have people who do nothing but monitor sites like this. Social media is not just FaceBook and Twitter. Additionally, the SPLC is notorious for monitoring these type sites, infiltrating and even instigating plots like the one referenced above. They will take and twist whatever is written here to match their narrative of antigovernmental extremism. So, be careful what you post.
Regarding the sale of multiple 80% completed firearms, I would ask the ATF and get something in writing, such as a reply from an email. Of course, like the IRS, that doesn't mean it will stand up in court against an aggressive prosecutor.