“in the majority, the ???”? is not followed.”
Which just goes to show that Rambam’s 13 principles are NOT universally accepted today. For more examples of such, see Prof. Marc Shapiro’s book, *The Limits of Orthodox Theology*.
It is intellectually dishonest to attack someone for not holding by Rambam’s principles when you are defending reciting Machnisei Rachamim — or, even worse, say it yourself.