Yeah, I’ve had hex strip before as well. It’s always been on the smaller sizes for me though at least. Like sub M3 or 1/8" ish. And of course, cheap hex keys are just asking for it at those sizes. On the other hand, I’ve definitely never had a torx head strip out on me.
There are low profile hex heads that exist for that same purpose though. Pretty much no need nowadays for slotted heads, except at very small scale.