If you cut the whole thing down at once, yeah, maybe it won't come back. But if you do a reasonable section, it comes back alright.
So, current management practices are only cut down what you need to produce lumber and other wood products and wood adjacent stuff; plus the extras that get cut and don't make it to the mill whatever.
I think the proposal is to cut more, and drop them off into deep ocean where they won't decompose much. As trees grow, they turn environmental carbon dioxide (and other inputs) into wood, but an established forest is mostly steady state in carbon dioxide... cutting it down and depositing it into the ocean is a way to keep the existing carbon dioxide as wood and turn more carbon dioxide into new wood.
I’m sure that won’t come with any unintended consequences
Logs that long ago got stuck on river bottoms on the way to mills are pretty valuable now if they're in good shape.