The US has no interest in undermining the BAP, do you think they rather the Islamists get in power? Criticising and sanctioning brutal repression, and advocating democratic standards won’t undermine the BAP. As pointed out up thread, they’re very popular anyway.

So one reading of the US actions is just to try and push the BAP into cooling down the political temperature, and not exploit their dominant position so much that it incites further violent backlashes.