You're missng the fact that the bike can be removed by temporarily taking off the saddle or maybe even just shifting the bike around to push the saddle through the d-lock.
Ah yes, I thought/assumed high toptube with lock around it. Now I look properly I see what you mean.
@M_V started
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You're missng the fact that the bike can be removed by temporarily taking off the saddle or maybe even just shifting the bike around to push the saddle through the d-lock.