Agreed, planted tank substrates typically do not need to be vacuumed and it's not uncommon to enrich such substrates with fertilizer tablets and/or soil, laterite, etc. I avoid disturbing the deep layers of substrate immediately around rooted plants, but sometimes use my hand to wave/aerate/stir up the top layer a bit and periodically will pick up rocks and driftwood to remove accumulations of mulm/detritus that build up under them over time. I wouldn't bother doing this if the driftwood is anchored as the focal point, however. Doing so would destroy the aquascape.