There's a key bit in that article that I'd missed before.
The £13m that they're now begging the Council/WMCA for, is in effect the bailout that the Council gave ACL in 2013 (that they voted for in secret, as you'll recall).
So what Wasps are actually asking for is that the Council are put back on the hook for the stadium debt.
The primary justification people use to support the sale (also in secret) to Wasps, was that it got the taxpayer off the hook for the stadium.
Surely those same people will now be against risking public funds against the stadium again? Anything else would be hugely hypocritical, surely?