Rubio, however, specifically pointed out the symbolic (and malicious) gesture of his whole switch back to Times New Roman.
The left didn't react pettily. Please stop thinking the left are the right are the same when the facts show they are not. The left's change was for a demonstrative benefit. The right is doing it so fuck over people. You think these are the same.
https://www.scitepress.org/Papers/2021/109668/109668.pdf
It's not a big difference, but apparently TNR was the worst of the fonts tested for OCR.
But anyway, there was no "signaling" about the change to Calibri. No-one ever tried to make a political issue out of it the way Rubio is now.
If you say that it doesn’t matter whether changing the font had a large practical impact, because it’s a gesture in the right direction or helps build a culture of accessibility, I would classify that as signaling.