[central_va]

A right to secession on demand is also not in the Constitution

Exactly so secession is not unconstitutional.

[BroJoeK]

x: "A right to secession on demand is also not in the Constitution"

central_va: "Exactly so secession is not unconstitutional."

Understood correctly, there's no ambiguity here at all.

Our Founders totally supported secession "at pleasure", when done, as they did in 1788, by mutual consent.

They also supported unilateral unapproved secession when done, as they did in 1776, by absolute necessity

But no Founder ever supported unilateral unapproved secession at pleasure.

Once you understand that, everything else makes sense.