It happens in a lot of shows, to be fair – even good ones. Elementary does this often, albeit in a somewhat subtler fashion than that script. It's particularly common in US shows, where the production team assume people haven't been paying attention (so not Game of Thrones, Fargo, House of Cards, etc.)
I can't imagine it'd happen in Dredd. Assuming the Kingsleys stay involved (and why wouldn't they?), they're going to ensure if the show becomes a reality, it won't be shit. Although I know Dredd divided opinion somewhat around these parts, it was objectively a tight, smart, well-edited, decently scripted* movie, and they wouldn't allow a telly show to be anything different.
* Apart from one bit I've never really understood – why doesn't Dredd at any point pick up another weapon when he realises he's running low on ammo? Bit weird.