The damage people associate with pressure washing almost always comes from one decision: using high pressure on a surface that needed a cleaning solution instead. Pressure removes what's sitting on top. It does not kill what's growing in, and on a delicate surface it takes the finish along with the dirt.
Barrel-tile and shingle roofs are the clearest example. High pressure on a tile roof displaces and cracks tiles and drives water under them; on shingles it strips the granules that are the entire point of the shingle. Roofs get soft washed — a low-pressure application of a cleaning solution, dwell time, then a gentle rinse. The result looks better than a pressure-washed roof anyway, because the organic growth is killed rather than knocked off.
Painted stucco, screen enclosures, and wood all belong in the same category. So does anything with mortar joints, where a narrow high-pressure stream will cut the mortar right out. Pavers are a special case: too much pressure blows out the joint sand, which then has to be replaced and re-sealed, turning a cleaning into a restoration.
Concrete driveways, sidewalks, and pool decks can take real pressure — but they should be done with a surface cleaner rather than a wand. A wand leaves the arcing stripe pattern you've seen on half the driveways in your neighborhood, because the overlap is never perfectly even by hand. A surface cleaner spins the jets inside a housing and leaves a uniform result across the whole slab.
Two last things worth asking about. First, landscaping: beds should be rinsed before the solution goes anywhere near them and watered down thoroughly afterward. Second, staining. Rust from well water and irrigation, and oil in the driveway, are chemical problems, not pressure problems. They need a specific treatment, and anyone who tells you they'll just blast it out is about to etch your concrete and leave the stain.