The site is obviously the work of a person who has dedicated his life to criticizing everything that has been done since the council. This attitude logically leads to schism as exemplified by the notorious Society of St. Piux X, which claims that the Novus Ordo Mass is invalid.
This being said, many Catholics like to attend what they call the “Latin” mass (a misnomer), which is the Mass of the 1962 missal, and, by the way, is not identical to the Mass that was approved by the Council of Trent. More power to them
The Pope says the Novus Ordo Mass in both Latin and other languages. Stick with the Pope. As someone said, “I’d rather be “wrong” witht the Pope than “right” with anyone else.”