Photos 1, 2, 3 and 4 are similar in appearance, small cuts in the surface of the floor covering that are the result of dynamic point loading. High-heeled shoes could do this, but what about small rocks stuck in the sole of a shoe? You can't just blame the ladies for this one. Anything that will transmit a heavy load down to a small surface area contact will do this type of damage.
Photo 8 is the result of several holes/punctures and a chair with wheel casters which had small rocks imbedded in the plastic, traveling repeatedly over the same area.
Proper maintenance would be my call. This floor covering has never had a dressing or polish applied to it for five years.
This cut, like 90 percent of all cuts, was not visible when the installer left the job. Only after time was it visible. Washing, traffic and soil brought it out to a visible state. If you do over-cut a piece of vinyl, use the proper seam sealer and fix it! If you seal it shut before dirt can get into it, your callbacks on this type of problem will virtually disappear. Thanks again for reading and have a great day!