As you know, Trump is inviting all Patriots to come to Washington DC to support him. Some commentators have stated they need congressmen to see the Patriots in support of the president to decide how they will proceed.
Nobody needs to another gathering of trump supporters to make up their mind. There have been countless massive Trump rallies Non-Stop across the country. At the end of the day, there are only Patriots and traitors, and they shall vote accordingly.
President Trump needs the optics of millions of Americans celebrating his victory. A quote from Game of Thrones is "“Power resides where men believe it resides."
If the President retained the office silently in a non-traditional way, the MSM lies that he is falsely making the claim seem more believable.
The image of Americans will replace the older memory of Trump haters dancing in the streets.
Also, to cement the reality that he is staying, Biden supporters must be shown infuriated and rioting in the streets once again. Despite the efforts of MSM, any perception of a victorious Biden will be wiped away, and Donald J Trump will smoothly continue his Presidency for another 4 years.
I agree with your thought process. Celebrating 4 more years?? Is what this is all about!