Is my frame beyond repair?

[Pat "5mph"]

Can this thread be cross posted to the Folding bike thread?

Mod Note:
I'll move it to the folding bikes section.

 

[Blue Hills]

The brommie is different to most bikes in that you cant pull the seatpost up out of the frame. It stops when fully extended. Seems hard to believe Brompton would have made it so that was unsafe?

always ridden mine fully extended.
brommies and other folders break the "rules".
including on traditional bike sizing as well of course.