Years? That may be a bit of an exaggeration. Could be that way on the 787 but from the junior folks I know on the 787 they can get at least one landing a month if they are aggressive with trading and pick up. If you have strict bidding criteria like having weekends off and only going to one or two select cities on specific days then yeah, you might go a while without being able to get the flying on a specific trip leaving on specific days. But if you're open you can get landings.

It's a little easier for junior folks to get landings on the 777 because we have more domestic flying than the 787.