One's eternity depends on obeying Christ.
...and Christ has seen fit to provide supplied jurisdiction through his ministers, perhaps Providently, for a time such as this...
A footnote to the impasse: supplied jurisdiction is not a universal and an all-encompassing right. That is what you seem to imply. So we don't come off from a common tangent, let's understand that the church supplies jurisdiction only in certain cases, instances, or states of necessity. And, mainly, what are these? When the salvation of souls is threatened. And only for that reason and purpose.
For instance, where I live there is a thriving traditional parish. There is no endangerment nor jeopardy to the corruption of souls. In other words, there is no state of necessity. Ergo, Fr. Trad who comes in to this bailiwick and sets up shop cannot claim to have supplied jurisdiction. His priestly faculties are illicit and criminal.
Now supposing a Catholic from out of town comes upon Fr. Trad's "church," sees all the trimmings of a traditional parish and, not knowing that this priest does not
have faculties, sees a line to the confessional and joins that line intending to go to confession: common error is then applicable and this catholic receives absolution via supplied jurisdiction.
Otherwise, if this Catholic is aware that the priest is a sacerdos vagus
who has no faculties, he is enjoined by conscience to avoid seeking the sacraments unless it is a matter of emergency (imminent death). There is no law applicable, error of fact or otherwise, to confer the sacraments on him.
The SSPX has not set up a mission chapel in my area for this reason, knowing that jurisdiction is not and cannot be supplied to them.
The priests of the Society of Saint Pius X have never claimed to have faculties to hear confessions. In fact, we have repeatedly stated the contrary, namely that our bishops do not have jurisdiction to grant faculties...
How else can one come off tangent parsing these statements? Canon law(s) cited is applied when there is a necessity, and this necessity is only about the salvation of souls, -- when a valid priest with faculties cannot be approached within a reasonable amount of time or is within a reasonable distance. No amount of applying "shades of meanings" will change what the church has ordained in her laws. The SSPX's claim to supplied jurisdiction is there but it is limited and constrained. It is not universal. It's availability gets narrower and slimmrer now that traditional priests are feeling the void.