Yeah, be aware that these may block screens or other things like mobile phone holders on the back of the seat for the passenger behind you if you can’t find a way to keep the strap confined to your own headrest. I wouldn’t bring one of these only to find out you can’t use it.
They make neck pillows that are more supportive than those cheap inflatables and will hold your head upright. I’ve had one for a while now and they work pretty good. They support under the chin so it helps you aren’t “catching flies” too.
I’d recommend one of those, but they tend to be more expensive than the cheap pillows.
Every plane I've been on with screens over the past 2-3 years had a sliding headrest that gives you something to attach to that doesn't interfere with the person behind you. It's a good thing to be aware of, but I haven't seen it be an issue at all.