"A non-dogmatic home aloner will go to Mass and receive the sacraments once they realize the situation, but the dogmatic home aloner will not go to the SSPX or CMRI that's only 20 minutes away because they insist that the priest is a heretic, or they are not valid priests, or there are no more valid priests, or it's not the 1931 Missal or whatever other erroneous reasons they come up with."

If this is true, then why do we hold out the Vendee' as heroes for resisted the juring priests in France.  The juring priests compromised and the the people of the Vendee' would have nothing to do with them and stayed home instead.  What about the martyrs in England who wouldn't compromise?  What about St. John Vianney who's family wouldn't compromise?  Archbishop Lefebvre specifically stated that you don't go to compromised masses because you will lose the faith.  He said it is better to stay home and sanctify the day rather than put your faith in danger.

The point is, the Church binds us to assist at the Mass (not the NO) under pain of mortal sin. In these days we must be sure the Mass we attend has a valid consecration - so find out! But we must go or the Church tells us that we sin, it's that simple. 

It is a giant understatement to say the NO is merely a "compromised mass" but we are not obligated to attend that evil thing anyway, I myself say that we are obligated to *not* attend a NO service because of what it is. So for the NO we are the Vendee, but for the true Mass, if we have one provided for us that we can make it to, then we are bound to go or we sin. If we have legitimate reasons not to go then we don't go - but the DHAers (dogmatic home aloners), at least the ones I've known personally, have bogus, totally illegitimate reasons.

If the true Mass is celebrated by a boasting heretic priest who preaches open heresies from the pulpit during the sermon, then there's a problem if his heresies cause scandal among the faithful. Personally, that is something I have not seen in +60 years of this mess so I don't  know for certain what I would do. But if that was the case and that's all I had, then my guess is that I would still go to meet my obligation but walk out for the sermon. 

According to the Dimonds, this apparently happens at every single traditional Mass in existence (I'm exaggerating here); so we just need to stay home and pray the Rosary. But they're not "radical schismatics"

Well, the few DHAers I knew, that was pretty much their thoughts. They went from being some of the pioneering trads to DHA when they decided nearly all priests were invalid, the Mass vanished, everyone was a danger to their faith and on and on, but they knew somewhere there had to be one bishop hiding in a jungle somewhere, it was not good.

Heck, I was just young but even I knew they were majorly screwed up at that time. I mean there are staunch trads, and then there are nut cases, the DHAers I knew were the latter.

"A non-dogmatic home aloner will go to Mass and receive the sacraments once they realize the situation, but the dogmatic home aloner will not go to the SSPX or CMRI that's only 20 minutes away because they insist that the priest is a heretic, or they are not valid priests, or there are no more valid priests, or it's not the 1931 Missal or whatever other erroneous reasons they come up with."

If this is true, then why do we hold out the Vendee' as heroes for resisted the juring priests in France.  The juring priests compromised and the the people of the Vendee' would have nothing to do with them and stayed home instead.  What about the martyrs in England who wouldn't compromise?  What about St. John Vianney who's family wouldn't compromise?  Archbishop Lefebvre specifically stated that you don't go to compromised masses because you will lose the faith.  He said it is better to stay home and sanctify the day rather than put your faith in danger.

Exactly!