As long as you are acively updating it, then I don't see that being an issue. Frankly the way I see it, is unless they are mitigating circumstances, if a developer goes more than 6 months to a year without any updates or even posts about updates, the project is abandoned. Any other reasoning simply doesn't make sense.
But let's say the game is completed, then once it is marked as completed and not still in development, then obviously it shouldn't be able to be flagged as abandoned, because it is complete.