They likely will consecrate another Bishop when they are in another state of necessity. I don’t think they are there yet with the 3 Bishops.
Since you know Fr. Stanich so well... like one of the family? You seem extra interested in defending the SSPX. I guess I'll respond to you here then --
1. Then why did the SSPX condemn the +Williamson ordinations? He was the only bishop in the Resistance, and quite old at the time. Sounds identical to the +Lefebvre situation to me, at least in the *fundamentals*.
He thought it was necessary to preserve the Faith. France vs. England, total yearly revenue of the 2 respective groups, total number of chapels in the 2 respective groups, etc. makes no difference, as these traits are completely
accidental rather than essential.2. No state of necessity? Bishops +de Mallerais (born '45) and +Galarreta (born '57) are getting up there in age. Isn't +de Mallerais literally retired at the moment?
While I'm at it, I should mention that +Williamson was born in 1940 and +Fellay born in 1958.
3. Even the younger 2 bishops are 63 and 64 years old. That might make them seem like spring chickens compared to +Williamson who turned 81 this year, but remember that not everyone has the same genes. Some men die in their 60's or younger, while others live into their 90s and beyond. And many die somewhere in between. Just because +Williamson lived to see his 80th birthday is no guarantee that +Fellay or +de Galarreta will.
Moral of the story: If you are old enough to start drawing Social Security, and have reached the customary retirement age in your country, it's certainly time to think about planning your will, your estate, and setting your affairs in order. And any bishop reaching that age should give ample thought to arranging for a successor.