Actually I unironically consider Arnold a good actor (In a very specific way).

If a measure of good is being able to take ownership of a role to the point where the audience can't imagine anyone else playing it...Arnold has the presence and the charisma to do that no matter what role he plays. Sure, his english may be stilted, and he's not going to be winning an oscar or anything.

But acting includes physicallity (IMO) and I can't picture anyone else in a huey puffing a cigar like a badass and then accusing his buddy of pushing too many pencils in the manliest hand shake scene ever in Predator. And then telling a bunch of kindergarteners that It's not a tumor...

Only Arnold can pull that off. He's iconic. And THAT takes at least some ability.

He was a great Aquaman. And I like him on Stargate Atlantis.

Most of the things he's been in more recently are just not very good writing wise (Dune is not one of these). Even a great actor can't turn shit writing into something good unless they adlib line changes. Him being someone who is generally typecasted for his looks also doesn't help.

He was good in dune imo. He's a bit average all told.

I liked him as Garrett in A Minecraft Movie. I know that's not really like the best example of good acting lmao, but it's what comes to mind. He was my favorite character in the movie and I even cosplayed as him. I thought him and Jack Black as Steve had pretty good chemistry and were able to bring a plausibly deniable gay angle to the characters. ("Let my hips guide you!")

I didn't say criticism wasn't welcome, I said it seemed a bit mean spirited. Those are not the same thing.