Because the 2020 Election was not a free and fair election.
Because Congress failed to certify electors honestly, and because the Supreme Court denied President Trump judicial review of the 2020 Election, he has every right to claim that the American People reelected him by a landslide in 2020.
Which, given manifestly suspicious actions of the Biden camp subsequently, one may reasonably infer he did.
Congressional certification of electors was obviously intended by the Framers to serve as a final check on fraud in the Electoral College, and to balance the power of the states--not to rubber-stamp whatever electors the states send.
Certification is clearly designed to insure that results are bona fide.
By certifying disputed results without additional verification, in this case Congress has failed in its obligation to preserve, protect, and defend the U.S. Constitution.
It is the failure of Congress and the Supreme Court to do their duty in good faith--not President Trump's rhetoric--that led to violence.
Due process was denied. Equal protection was denied. The right to vote of American citizens was denied.
By the US Congress--not President Trump--that is, the Legislative Branch.
By the US Supreme Court--not President Trump--that is, the Judicial Branch.
President Trump heads the Executive Branch.
Under the Constitution, all three branches of government are co-equal.
As Chief Magistrate, a sitting President has as much claim to say he the US Government as Congress or the Supreme Court.
A President by definition cannot overthrow himself or his administration.
So, even if one stipulates the Capitol protest turned violent, it was still obviously NOT an attempt to overthrow the Government of the United States.
Instead it resulted from a conflict between the Legislative and Executive Branches for an honest determination of the will of the American People.
If Congress made a fraudulent certification, then that act of Congress was both illegitimate and unconstitutional.
For as any graduate of a traditional High School Civics class knows, the United States Constitution says that power belongs to the American People.
Not to the President--who is merely a hired executive heading an administration working for the American People.
Not to Congress--who are just hired representatives of the will of the American People.
Not to the Supreme Court--who are only judging laws in order to ensure they reflect the intentions of the American People as passed by their representatives in accordance with the Constitution.
Which means there is no such thing as "peaceful transfer of power" on Inauguration Day.
There is only a change of administration.
Power remains with the American People at all times.
And is divided equally between the Executive, Legislative and Judicial Branches under the US Constitution.
Not transferred by an inauguration.