Here’s the bottom line: speculation is defined as an “educated guess”. It is a projection based on some facts, but is not 100% proveable (at the time). It is factual that Pablo has messed with lay exorcisms in the past. It is factual that he has some sort of “diablo” nickname. It is factual that he knows about curses and such things, because he has accused others (projection?) of being involved. It is factual that animals are killed during rituals and in strange ways, often burned. It is factual that, in Boston, animals have died in strange ways, with Pablo’s dog being burned. It is factual that Pablo is not a practicing Catholic and has stated openly that he dislikes Trads. It is factual that he is a liar, bully and a cheat.
Add all of this up, and it’s valid speculation (with much circuмstantial evidence) that Pablo is involved in witchcraft of some sort. Doesn’t mean he is, but it’s not wrong to think it’s possible.
You forgot a few things:
Pablo habitually dresses in all black.
He habitually wears sunglasses (to cover the eyes, the "windows of the soul")
Pablo frequently speaks of, and about, the devil -- more than is normal OR healthy
Pablo has often shown a great disdain for Traditional Catholics (the persecuted, outnumbered, faithful remnant!)
Pablo has frequently placed Trad Catholics at the same level as, or below, the devil himself.
Pablo was quoted as saying he practices "Omerta", which is normally associated with the Mafia
Pablo seems to think about and talk about curses way more than normal; he is quite superstitious at best
Pablo made a bold, unusual, extraordinary slander against Fr. Voigt: namely, that he had put a curse on his son, causing his son's eventual death.
Pablo is extremely proud and obsessed with having his will done, which is consistent with how a hypothetical warlock WOULD behave.
Strange behavior has come out of Boston, KY, especially from two formerly good SSPX priests (Fr. Joseph Pfeiffer, Fr. Hewko) -- which is near impossible to explain!
Speaking of inexplicable behavior, these priests have attacked their former confreres, whom they used to love and support (ex: Bp. Williamson) and simultaneously support various priests with "lavender" reputations like Fr. Tetherow and Fr. Roberts, as well as clear frauds like Ambrose Moran.
Pablo is currently in complete control of the Boston, KY compound. He controls the communications, websites, finances, and keep in mind that Fr. Pfeiffer recently got control over the family property -- the real estate itself. So Pablo probably has control over that as well.