I agree with you that the government should release all protesters arrested. I actually don't care about the difference between "suspension without timetable for restarting" and "retraction" because even if the government had completely retracted the amendment, they could draft another amendment anytime anyway.
I don't think this is quibbling over terminology - "suspending" is a temporary measure, and governments being governments, there's every chance it would be "unsuspended" once the protesters melt away.
>because even if the government had completely retracted the amendment, they could draft another amendment anytime anyway.
Now that Carrie Lam has realised that she cannot do whatever she wants (at least on this issue). The criteria, if or when the this amendment will re-surface, will depend on public opinions, instead of whether it's temporarily suspended, or retracted.