Toss-bombing always looks cool, but has had very little application before this war. With dumb bombs it's inaccurate, and with precision bombs countries like America gain air supremacy and fly high and drop from level flight. The Hammer is well suited for contested environments in this war as it gives much more range when lobbed from low altitude as it's rocket assisted.
Target selection for them will be interesting. They have a higher payload than something like a GMLRS round, so the Hammers are likely to be primarily used against buildings with troops or supplies, as we see in this video.