That the Pelosi ploy is to set up the succession procedure for Joe Biden rather than President Trump is certainly a plausible possibility. From rt.com:
“This is not about President Trump,” Speaker of the House Pelosi said when announcing the legislation on Friday. “He will face the judgment of the voters. But he shows the need for us to create a process for future presidents.”
Instead, the commission is needed to give “some comfort to people” about government stability, Pelosi (D-California) insisted.
Some, however, were not convinced the commission is meant as just an additional safety mechanism in the time of the Covid-19 pandemic. Pelosi’s assurance the legislation wasn’t about Trump has quickly sparked a theory that such a commission could be used to replace 77-year-old Joe Biden – whose own mental stability has been steadily questioned – should he win the election next month.
President Trump himself floated that theory on Twitter shortly after Pelosi’s announcement.