Why prevents always-private Mode "advanced forms of tracking"?

[any1]

@SYST3M_D3STR0YER

But there‘s another important question left: Why does Privacy Guides recommend using always private-mode if there‘s a better option? [Privacy Guides wrote that “permanent private browsing mode […] is required to prevent advanced forms of tracking“ ( Privacy Respecting Web Browsers for PC and Mac - Privacy Guides )]

If/when MB moves to normal mode and opens up all these usability features, there are still issues that need to be addressed first - e.g. blobs are not isolated, site exceptions for sanitizing on close also compromise dFPI, how to handle sanitizing on VPN endpoint changes, and so on. And all this would require divergent code changes at Tor Browser Tor Project, but that’s OK, it’s a different build, just saying it adds more maintenance - so it ain’t going to happen soon

This was answered in the github issue I sent already.