This snippet from schismatic-home-aloner.com is enough for me to stay clear of the Dimonds. The disastrous effects this statement has the potential to have is inconceivable. Telling Catholics to stay away from the Sacraments is in itself un-Catholic.
• One must not financially support, in any way, any priest or group that holds false positions. We are not aware of any priests, groups or religious communities in the world (besides our monastery) holding the correct positions in a public, clear and uncompromising way.
• Don’t go to any church in this country (“traditional” or otherwise) for Sunday or Saturday Masses, since basically all the priests are heretics and the heretics give sermons or talks on those days. People should stay home on Sunday and pray 15 decades of the Rosary. (This generally applies to other countries as well.)