I did play Travian Legends way back. However, other things took priority, and I stopped playing.
When I first started Kingdoms I joined a king, that did not really want the best for the kingdom. Halfway through the server I got involved with some really experienced players, after the others had disappeared. Had a lot of fun and did learn so much from these.
Certainly it can be difficult being the new guy around, but how easy that is depends on your neighbors. I believe an experienced king will better be able to show the in-and-outs of the game and how to do different things to a new player. A good king let responsibilities grow with the governor, which will be fun for the players and a way into a group - something to keep the player in the game.
It ca nwork with a limit, but there are also those players who start late or start as a group of friends and do not want to join a kingdom.
Summary, an experienced king is the best for all players, but some might not want it.