Upfront is not compatible with Buddpress

Hello,
Following recent support contacts advising me that Upfront won't work with Buddypress, this page should be corrected:
https://premium.wpmudev.org/blog/buddypress-guide/

It states that "Our own themes are BuddyPress compatible" and links to the Upfront page.

I'm reading about how to override the Buddypress files with own designs. If this is possible with Upfront, I'd be interested in hearing about it and any caveats.

Best regards,
Morgan