Labour could even have said "show us the plan behind closed doors to avoid 'revealing our hand'"
Now, that isn't to say it wouldn't be spun as #Brexit blocking, of course it would
But only for a few months...
But consider where Labour would be now?
Corbyn would be 12 months into a long, consistent "we told you so, there was no plan, this was Tory recklessness" message, that would be unassailable.
And Brexit? Would be dying even faster
He took the safe compliant route.
Now Labour Leadership cannot attack the Government for starting a 2 year clock, because they helped start it
Numerous lines of attack are closed off to Labour, because the Leadership were utterly complicit 18 months ago
It's just reality
And it *doesn't matter* if "now" meant "now" or "shortly", he actively called for it rather than calling for a pause & a plan
Huge tactical error, gave Government his support
Weather some short term attacks then rise up saying "look, we knew this shambles would happen"
Instead Labour are nowhere
Such a waste