In Bp. Williamson's lectures, he mentions the faithful's vital need for priests. His Lordship said essentially: "...The priest can be an SOB, but if he knows his doctrine and teaches it, this is what matters".
Fr. Dardis has been through the neoSSPX administered "trad school of hard knocks". He covered two chapels alone, 140 miles apart, for approximately 5 years.
The Walton priory, even with three priest, can't match his diligence in supporting the Faithful with devotions and the Sacraments, needed and desired at both chapels.
He is also most holy in his apostolate for going anywhere, at any time to provide the last Sacraments to the dying.
In his priesthood, he sought to be a contemplative, so, he's naturally not the "charismatic pastor personality" some are hoping for.
In any case, if you don't have anything "docuмented" on him... that you can turn into the police... shut your mouth.
If, as you say, Fr. Dardis has "problems", there's a high probability, the "Walton clan", SSPX District headquarters and Menzingen are involved in it too.