I find this approach interesting. I believe Matthew and Sean Johnson hold to the same trad-ecumenical viewpoint you outline here.
My mother raised us that if you don’t stand for something, you’ll fall for anything.
I don’t buy it.
Pick something and stick with it.
If I understand this comment properly, you are equating the "yellow-light" position with tradcumenism?
If so, I think you have a rather broad idea of what is meant by the term "tradcumenism."
As I understand that term, it refers to doctrinally opposed groups setting aside their doctrinal differences for the sake of unity.
Yet, I am not aware of any
yellow-lighters who hold their position because of any desire for unity with the SSPX (a consideration which I highly doubt ever enters into any of their minds), but rather because the sophistical reasons forwarded by Jonestown to compel the "red-light" position, where they are not flatly false (e.g., communicatio in sacris to attend SSPX; AFD = official SSPX policy; etc), do not suffice to dispense from the Sunday precept.
Until or unless the SSPX signs or promulgates some kind of official declaration or agreement which creates a moral compulsion to abstain from Mass attendance, there are no official
doctrinal differences between them and the Resistance.
Those differences would exist at the de facto
level, which not being de jure
create no blanket moral compulsion (or justification) for abstaining from the Sunday precept.
And that being the case, there is neither desire for unity, nor contradictory doctrines to overlook.
Hence, to impute tradcumenism to yellow-lighters is to mischaracterize (deliberately?) the situation.
Contrast this with the recent Catholic identity conference (where the SSPX mingled with PCED and conciliar clergy):
In this case, tradcumenism would most certainly apply:
The SSPX and PCED/conciliar groups officially
hold contradictory doctrines, which differences were set aside for the sake of unity.
But as mentioned, that is not at all the case with the non-Pfeifferian Resistance attending SSPX Masses (most of whom consider themselves obliged to attend out of necessity, not for the desire of unity).