As a geologist with 2 degrees and a lot of passion in the subject, I’ve never heard of lithospheric drip related to orogenic dips until now, but I love it and kick myself for not questioning the over simplicity of typical thought around lower crust processes enough.
As an exploration geophyicist who 1/ posted this, and 2/ can bang rocks together, I wonder if you've heard of Continental Drip, Ormonde de Kay, 1973.
It introduces an entire other level of simplistic thought.
The Südpolarfluchtkraft is out there.