> With Maplibre or any modern map SDK this this is standard…

In practise, this doesn’t work out as visually pleasing as you’d like; labels repeat, or render partially or not at all, or become interfered with by other labels, or only work well at one given zoom. It’s easy to end up in a visually dissatisfying place that’s taking an unfathomable number of magic rules to get to.

The secret sauce to fixing this is creating separate label layers of perfect point locations or lines for labels to follow in advance. Added bonus is faster render and interaction times due to fewer rules.