Of course a player who is in a hood with players way ahead of them won't feel great, of course they'll be attacked more frequently, of course it can be frustrating, and of course it's an issue. The point is all of that is already established and known and there's no need in repeating all of that all over again. Instead we should be focused on discussing or presenting ideas which can resolve the issue. We submitted a proposal for this already a bit less than 3 months ago, it can be found
HERE and it asks from the devs that hoods have at most 2 ages present. Whether or not that is implemented, or when it's going to be implemented is not something that can be answered by anyone.
If that doesn't seem like a sufficient enough idea, or in case it's not implemented, then put forward a new, fresher idea. With so many folks interested in the same topic you could move mountains, yet all discussions eventually end the same way, by not doing anything and only venting. That's why we have so many individual threads on the same topic, most folks either don't check the previous posts or don't care to get involved with a proper discussion for ideas on how to resolve the issue, they vent in a post and then almost never return to the forum at all. Yes, not a very good observation and could definitely be put together in a more professional manner, but really, focus on ideas is all that's needed here. Would preventing player A from attacking player B who is 3 ages lower than them suffice? Does that seem receptive from the posts other have made? Then put that in a proposal and let's get it rolling.
Just keep in mind what's already part of the game and don't make the idea personal but make it general. If the proposal is to limit plundering then it won't get any support because you already have the needs to prevent plundering, time your productions and be there to collect them. You can't find the plundering an issue but not the attack, those two go together and if you're only worried about plundering that tells me you don't really mind the age discrepancy, you just mind getting plundered which can happen regardless of the ages present in your hood.
ETA: It should be noted though, it's simply easier to complain and that's why folks are vocal on the topic, there are a lot of players who don't want hoods to become more selective --- see the results of that poll (barely passed the mark with 0.44% votes) and read the responses there. I can't say which group is larger based on a single post, but just because the topic is all over the forum it doesn't mean a change will turn the world bright and pink. Just as the issue may be driving away some players, changes also frustrate players and pushes them to quit the game.