Yes if you can live with nasty gear chatter from the gearbox at low rpm and it will probably trash the gearbox in the long run, and a broken crank could be on the cards too!

A dual mass flywheel is there to serve a specific purpose. If it's worn it would be cheaper to replace it with a solid flywheel. However that initial saving will be vastly outweighed when you eventually have to replace your gearbox due to its destruction by not having an energy absorbing dual mass flywheel. Your choice really.

Not just the gearbox, can affect the engine as well.

After years of diesels with DMF's we bought a Ceed that did not have one. You could certainly tell, it would not run at low revs without vibrations through the whole car. A "Campaign Recall" for a updated ECU map improved matters but it was still annoying having to hold 4th or 5th when 5th or 6th would have been fine in other cars. And it wasn't because it was higher geared either, it was probably lower geared.

Does not seem to cause any reliability issues with those cars probably because that is how they are designed to be used, just a bit agricultural.