People do talk rubbish about brake pads – I’ve had Shimano resin, Shimano sintered and all sorts of different aftermarket pads, including Superstar and Uber. The ones that lasted the least time were the Shimano resin and the Shimano sintered were no better than most of the aftermarket pads.
In your opinion of course.
Personally I find OE sintered the best available (other than Swisstop which are bloody impossible to get). Can’t use any resin pads, they just feel like nasty mush on anything testy where brakes get used properly. They would probably be fine round flat trails. Of course, your riding style, terrain & MMV.