So, I'm thinking through the timeline up to Phil's marriage to Kat.
April 2017 - Leanna leaves Phil
June 2017 - Phil and Kat start talking
November 2017 - Phil reveals he owes back taxes for Washington
December 2017 - Phil has a successful fundraiser for his back taxes
Also December 2017 - Phil talks about Kat for the first time
February 2018 - Phil flies Kat to Washington and she moves in
March 2018 - Phil claims that he's done with his taxes and they're paid off
April 2018 - Kat shows up on stream for the first time
October 2018 - Halloween special and Kat runs off stream. I believe this is when Phil wanted to make a marriage proposal to Kat, but she didn't want to go through with it. He blames Tevin and detractors for the failure of his stream. He likely proposed to Kat off stream between then and Thanksgiving 2018
November 2018 - Thanksgiving stream. Reveals that his parents are in "poor health" and "I don't know how much longer they have left to live". He later walks this back to make things less dire, eventually saying that they want to meet Kat while they're in good health. In this same stream, he reveals that he paid the taxes from 2017 through credit cards. He also reveals that he owes 16,000 dollars for taxes (later revised up to 17,000).
December 2018 - Emerald 7 gives Phil 12,000 dollars through Tier 3 subs. He has a couple of unsuccessful fund raising streams during this month.
February 2019 - Receives the Emerald 7 money. Claims he's nowhere near what he needs to raise.
March - April 2019 - Has a couple of moderately successful fund raising streams, raising about 3,000 dollars before leaving to Connecticut.
April 2019 - Reveals his marriage to Kat.
Going through the timeline, there does seem to be a pattern of fraud. He claims that he needs money, he gets at least some of the money, and then uses it for something other than what he needed it for, which is usually taxes. In 2018, he used the money to move Kat in. In 2019, he used it to marry Kat.
I fully expect Phil to explain why the deception's necessary (detractors crashing the wedding), and that his parents paid for everything. He's going to tell a story on what he thinks is the problem, and he'll expect people to believe him without any evidence (corroborating or otherwise). Rather than address the difficult questions, he's already calling people who call him out as idiots.
At the risk of sounding optimistic, I think this might be the beginning of the end for him. People who were long time supporters of him are feeling defrauded and betrayed. If the platforms don't ban him outright, his already tepid support is going to fall to next to nothing. Given Phil's reliance on unstable income is finally going to bite him, and his monthly income is going to drop rather greatly. His fans do not appreciate being lied to.
The funny thing is that his deception was completely unnecessary. He didn't need to bring up his ailing parents at all. He could have just said nothing other than, "I'm going back to Connecticut to visit family," and that'd be the end of it. The timing was also pretty bad. If he had waited till May, this wouldn't be an issue. But now, things are looking really bad for him right now, and I think the story he'll tell on Sunday will make things worse.