Blessing of the Moon for a Mourner

Should a mourner recite the blessing of the moon during the seven days of mourning?

Mishna Berura, Siman 426, S"K 11: "Regarding a mourner, when he sanctifies, the opinion of the MA is that if he completes his mourning before the tenth of the month, he should wait and sanctify on the night of the tenth. But if his mourning ends on the tenth of the month, he should not wait for the eleventh night, and it is better to sanctify the moon during his mourning. The opinion of the author of Shaarei Ephraim is that if there is time to sanctify after the completion of the mourning, he should wait, but if by waiting the time will pass, he can sanctify during his mourning and can go outside to sanctify. See Beur Halacha."
In Beur Halacha, it is written that there is no need to worry that the sky might be covered with clouds, and therefore he should wait with the sanctification of the moon until after the seven days, even if only one night remains.
Some write that a mourner does not say the sanctification of the moon during the seven days, because the moon reminds of judgment, as the first judgment in the world was when the moon complained that two kings cannot rule under one crown.