A popular youtube channel with writers created a link between orcs and a group of people, and they are all aware of it now so you can't have evil orcs anymore (or any evil race for that matter, can't even have Xcom games anymore cause it's seen as problematic against illegal aliens)
Apparently J.R.R Tolkien doesn't know how to write then......
You CAN make evil races in a story, but it is generally not a good idea to make them the
main conflict. That's what people really meant when they said "no evil race" etc.
JRR Tolkien never make orcs the central of conflict in his story. The center of the conflict has always been humanity and their inner struggle, and the love hate relationship between races. The orcs, Sauron and the ring are simply a trigger to the main conflict, but the orcs itself are not the central conflict.
The evil races are the same role as disasters in disasters movies. In any disasters movies the real antagonist is never the disasters itself. It is people and humanity struggle being the central conflict in disasters movies.
This is why the main conflict in "Tiantic" isn't ship sinking and people escaping, but Jack v.s Rose's Fiance.
I didn't watch all of the YouTube video content, but if your conclusion after watching the video was "a story should never have evil races" instead of "an evil race shouldn't be the main conflict", then that video probably doesn't teach the art of script writing correctly.