bypass CSP in Chrome extension's content script

Question

I'm working on Chrome extension, that need to work with another extension (Metamask).

Standard way of doing this is by window.ethereum object, but from content script this object is undefined.

I found Can the window object be modified from a Chrome extension? but all examples are blocked by CSP of website (in my case twitter.com)

Is there any way of bypassing CSP from chrome extension's context?