Are these folks stuck on stupid?
They can’t consecrate anyone until their ordinations are sorted out.
And yes, until they are recognised as Bishops, they can’t consecrate priests.
Huh?
The four bishops of the SSPX are valid bishops - however, despite the lifting of their excommunications, they remain suspended a divinis. Therefore any Sacramental actions that they perform are illicit, and any priests that they ordain are automatically suspended a divinis.
Even so - their new deacons really are deacons, their new priests really are priests. Were they to go and consecrate one or more new bishops the new bishops would be validly bishops - though that would be the end of any discussions and would mean (re-)excommunication for any of the bishops involved.
The only exception for the licety of a Sacrament would be Confession for one in grave danger of death - which any priest (even a laicized priest or a validly ordained non-Catholic priest) can administer both licitly and validly.