No. This is a rationalization for a belief that is incorrect.

It can be both. Typically one doesn't need to rationalize publically - by posting this thing to a large enough audience, this was past the point of rationalization - but was instead performative and seeking agreement/attention and acknowledgment.

And rather than stating the incorrect belief explicitly, she was using dog-whistle rhetoric techniques.

Again, you're rationalizing. You're making assumptions about her intent without any evidence to the contrary. This sort of thinking is the exact problem. You're finding your own conclusion, accepting it as fact, and then (in the case of the media) promoting that as what took place. That's a lie, no matter how you twist it.

The lie is pretending that people who post statements on a platform like Twitter and have a wide-spread audience or follower-base do not have any intent.

The lie is pretending that someones' written words are not actually enough evidence to show their intent.

The lie is pretending that statements exist completely isolated from any cultural or historical context. Marjorie Taylor Green has a well documented history of making very controversial statements.

The lie is ignoring the fact that time and time again conspiracy theorists keep bringing up the same scapegoats. Perhaps you are simply unaware that historically, attempting to link things with "Rothschild" is a very long-standing anti-semetic conspiracy and a known dog whistle.

> The lie is pretending that people who post statements on a platform like Twitter and have a wide-spread audience or follower-base do not have any intent.

Assumption.

> The lie is pretending that someones' written words are not actually enough evidence to show their intent.

Assumption.

> The lie is pretending that statements exist completely isolated from any cultural or historical context. Marjorie Taylor Green has a well documented history of making very controversial statements.

Assumption.

> The lie is ignoring the fact that time and time again conspiracy theorists keep bringing up the same scapegoats.

Generalization.

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You're desperate to align reality with your opinion and offering nothing but characters attacks and assumptions as argumentation.

Ditto. Wether someone is "insincere" or not matters less when one can judge their words and actions.