No, not at all, I’m just saying what should be obvious to people with experience, which was not my case, that the amount of foliage LAM uses in their demo scene requires a good rig to run at 30+ fps. In my naive pre-Unreal days I was hoping that you don’t run into performance issues so easily. This being our first PC game after almost 10 years on mobile, I was expecting to enter paradise, but performance will be an issue no matter the platform, mainly because we devs tend to get greedy and put too many things in.
It was more of a general warning as to how much foliage you put in and considering that LAM puts a decent amount of auto-generated grass on the landscape, you need to remember to tweak the density and to be careful how much extra foliage you add manually after. Not to mention that you still need to take care of the culling distances, LODs and so on. Don’t expect it to be magical, it’s still Unreal and it still follows the same limitations. Like you said, LAM is there to help you in creating landscapes, not to solve performance issues caused by overcrowding the level with foliage.