Ambrose wrote
According to SJB, the chapels that he is familiar with that reject the Pius XII Holy Week are in the same condition as churches were in the early 1950s: almost empty.
SJB also clarifies this point, but since I summarized his statement and there is some confusion on this, let me also clarify. I was only referring to his precise assessment of attendance at the Holy Week at churches that he is familiar with that reject Pius XII's Holy Week law.
I was not referring to regular Sunday and Holyday attendance. Catholics are not obliged to attend Mass during the Holy Week, but are strongly encouraged to do so.
In the early 1950's Catholics were for the most part no longer attending the rites of the Holy Week, and the Pope intervened by significantly shortening the rites and by changing the times to later in the day. The action of the Pope was with great success, and Catholics were once again participating in the Holy Week.