Always
“manufacturers just don’t want to deal with it”, “they don’t care”, or “trust me, I know what your child need to learn”.”
I’m not sure who you are quoting. Nobody said that.
you do not have to use a George forman, you will live there is no chiyuv, mitzva or even chumra to buy one.
IF you do buy one, the question is how to deal with the tevila issue. Some allow one to rely on the fact that it is plugged in, most don’t. Some may rely on that if combiend with selling to a goy most don’t. You can try taking it apart as others have suggested (though I would bet this would void any warranty just as much as immersion would)
I have toveleed probably 20 or so electric appliances (urns, George formans, Sandwich makers, pannini press, Pizza maker) with no problems. does that gaurantee none of them will break? OF course not .
If you don’t want to risk it and feel the tevila is not worth it. That is 100% fine. NO ONE is telling you that youhave to get a George forman and risk anything. Don’t you aren’t missing out much