Exactly!

Your name and “polish voices” doesn’t mix very well

To conserve fuel, (and engine temperature) one would think no. But with a heavy load on a short runway, or you want to shorten taxiing by taking a planned exit, full reverse is often used. :)

Everybody for some reason always wants to see a "greaser". Sure, with long runways a "greaser" is possible, but in this instance the ATC probably instructed them to leave at a certain exit, and so required a firm landing to get the aircraft slowed as fast as possible to make that exit. If you noticed, the aircraft was taking the exit at over 40 kts. If he did a smooth landing he most probably would of being forced to take the next exit. Also, with short runways, an inexperienced First Officer is not allowed to land the aircraft because the chance of him making a smooth landing is high which increases his landing distance. Firm landings are normal landings a smooth landing is pilot preference. A hard landing is any landing that exceeds 2-2.5'G and must be reported so the aircraft can be inspected for damage.

Full load, flaps 30 and more than 10 knot winds gives you this landing speed :)