Correct, that's the thing, thought maybe there was more to it than that, but maybe it is just a miner concern outside extreme cases/delays which would make nodes incapable of catching up. Lopp wrote a good little study on it, which I think I corrected some math on (but never got him to look at it, though I'm pretty sure my correction is accurate). Post is too old for me to find on mobile atm, sadly. It's interesting and will come back to share it later. It shows advantage one gets as function of delay time they can bake in.