It’s not whataboutism or moral misdirection, it’s about fairness: how come you are allowed to do far worse things, but I am not allowed to do this?
This applies to human rights, climate change, foreign aggression... This is actually the issue we (the world) need to solve.
1. I don't think Trump was actually "fascist". That word has lost all meaning, and has been used as an empty political attack for nearly a century. George Orwell literally wrote back in 1946, "he word Fascism has now no meaning except in so far as it signifies ‘something not desirable’." (https://www.orwell.ru/library/essays/politics/english/e_poli...)
2. It is completely legal to challenge election results, and both parties don't just blindly accept what you're calling the "will of the majority" when it affects their own power. Democrats have challenged election results many times in the past, for example in Bush versus Gore (https://en.wikipedia.org/wiki/Bush_v._Gore) in the 2000 presidential election. They also did the same in 2004 and again in 2016 (https://www.nytimes.com/2021/01/06/opinion/democrat-republic...). Even right now, during this very election cycle, there is a case where Democrats are challenging election results for a House seat, with Pelosi's support (https://time.com/5950292/iowa-congress-election-rita-hart/). Additionally, although most of Trump's cases were never heard and dismissed on procedural grounds, he has actually won 2/3 of the cases that were actually heard by the court (https://www.thegatewaypundit.com/2021/03/exclusive-accurate-...).
3. Trump did not send his "minions" to attack the Capitol building. The transcript of his speech on January 6th (https://www.rev.com/blog/transcripts/donald-trump-speech-sav...) explicitly calls for a peaceful march and protest. Twitter's own blog post announcing and justifying their ban of Donald Trump's account (https://blog.twitter.com/en_us/topics/company/2020/suspensio...) does not provide any clear evidence of Trump doing this. All it has are vague opinions and hyperbolic claims like trying to suggest that Trump's plan to not attend the inauguration is somehow a "glorification of violence". Keep in mind that there were tens of thousands of people in DC attending Trump-related events and rallies on January 6th. There were thousands even just in front of the Capitol. Only a few hundred actually went past the barriers. Let's also not forget about Democratic politicians encouraging a capitol riot of their own back in 2018 (https://www.foxnews.com/politics/kavanaugh-protesters-arrest...) - it didn't receive the same coverage in news media but was a very comparable incident, and resulted in Capitol police arresting hundreds.
China is doing lots of shady stuff, and they too claim that it's for the best -- only in this case we (as in most people outside of China's sphere of influence) ignore the claims and look at the moves as as power plays with a PR narrative. The people you talked to might do the same for US actions.
Let’s not stretch the meaning of genocide.