Earlier quoted context omitted.
Here's hard data showing that long lines like these aren't the norm: https://medium.com/mit-election-lab/insights-into-voting-wai...
Thanks for this! "Not the norm" is a bit of an over-interpretation though. That data shows that in many states such lines were indeed the norm until very recent reforms (as in, there is only one post-reform data point to go on). And that the reforms didn't help non-white voters to the same extent that they did white voters.
There is data on wait times from 4 elections in the article, none of which supports a claim that the wait times shown in the BBC article are at all normal.
It's obvious that you're looking to draw a very specific conclusion regardless of the data presented, so best of luck with that.