That people think if the cops arrest you, you're no longer innocent is the way bigger issue here.
The *principle* is that one is innocent until proven guilty.
The reality is that not every person adheres to that principle in every situation when it comes their own internal judgement of people.
> I'm not interested in weakening this fundamental right to accommodate people who are uncomfortable admitting the fallibility of the police or our justice system.
The problem is that they aren't asking you to accommodate them. They already are there, perfectly accommodated, in the state of prematurely judging people's innocence.
The reality is that any policy has to work by improving this not ideal situation.
A fight-fire-with-fire strategy might be that the government should aim to arrest all citizens at least once before age 25 and charge them with something ridiculous before dropping the charges. Ok after thinking about it for two seconds that may be a very stupid idea, but still...
The problem with that is that such a "should" doesn't change the "are", and that it's unlikely to change any time soon. So we need to acknowledge reality and try to find a fix that works within that reality.