“Nate sucks” is a spoiler. But also an expected reaction isn’t a spoiler, “Ted Lasso was funny this week”, but an unexpected one is a spoiler, “Ted Lasso was a sad episode this week.”

“Nate from Ted Lasso” is not a spoiler.
But I would say bringing up a minor character is a spoiler, ie “Did you guys see Jamie’s dad in Ted Lasso?”