“Nxtpaper isn’t a reflective display technology like E Ink which relies on little drops of ink moving around, but it does feature several upgrades over standard LCD panels. The Tab 8’s glass screen is etched with a fine pattern giving it a matte finish that reduces glare and reflections, and TCL’s latest version, Nxtpaper 4.0, is also designed to minimize the softening effect often seen on matte displays.”
Which is all good, but it still does not beat the real E Ink screen in terms of massively long battery life, and reading in the bright sunlight. So I’d say this is good compared to a standard tablet, but not for what an eReader was specifically designed for.
See https://www.theverge.com/news/786479/tcl-tab-8-nxtpaper-5g-android-15-tablet