If that's what you're saying than 2 wrongs make a right is exactly what you are claiming. Whether or not I personally choose to call out Trump and not Obama, Sanders or Biden/Harris has absolutely NO BEARING on Trump committing an insurrection. Firstly, I can be the biggest hypocrite in the world and still make a compelling argument about Trump. Just like you can be the biggest hypocrite in the world and still make a compelling argument concerning Obama, Sanders or Biden. That's the reason an argument from hypocrisy is a logical fallacy.
Secondly, I don't think Trump committed an insurrection because of "inciteful language". I think he committed an insurrection because I think and believe, I can make a compelling argument for him using inciteful language
in the expectation that it would lead directly to people actually engaging in an insurrection against the United States or the laws thereof.
The highlighted bit is important because it speaks to intent.
Maybe if I put it in the context of Sanders. I at least have some idea about what incitement you seem to be talking.
I'm guessing you are talking about Hodgekinson shooting Scalise? This or something similar is what would have been needed for inciteful speech from Sanders to be responsible for what happened in the same way that Trump is responsible.
You would need to show specific inciteful language from Sanders towards Republicans.
And then you would need to show that Sanders's language could be expected to cause this specific event DIRECTLY.
So, something like Sanders is giving a flaming speech towards Republicans. And then him saying something like "You know they're having a baseball game right now, so why don't you show them how you feel."
That would be compelling.
El Paso Shooting Suspect’s Manifesto Echoes Trump’s Language (Published 2019) 20 dead. His rhetoric closely echoed Trump. And no, he isn't responsible for it. Simply because I can draw no DIRECT line to Trump's rhetoric and what he did. Just like I don't think you can for the 4 you mentioned.
Again, those are CONSISTENT standards.
Inciteful speech is protected speech. Unless the person using the speech is doing so with the purpose to create an IMMINENT danger. If I say "I want Charlie to disappear" my speech is not against the law. If I say "I want Charlie to disappear, and I'll pay 20000 dollars to anyone who makes it happen" to a hitman I looked up on the internet. My language is a crime.