Why can’t police pursue TikTok reckless driving gangs?

Police in Ireland are legally barred from pursuing vehicles driven by "TikTok gangs" like the "Lucky Dip Gang", whose members film reckless driving and stolen-car stunts for online clout — a restriction that has come under scrutiny following the deaths of five teenage boys in a crash near Carlow [1]. The same crash, on the M9 motorway in County Kildare, has fuelled wider anger at a TikTok trend of filming dangerous driving, including going the wrong way down motorways, purely for likes [4]. Beyond noting that the pursuit ban exists, the stories don't go into the specific legal or safety reasoning behind it.