Agree with what @Lyya said. You can’t expect everyone to have same opinions as you. Don’t get discouraged for posting your thoughts or idea in the future.
About topic: I agree with you about lack of team variations in PvP. But this kind of thing is inevitable. As long as there’s competition in a game, no matter how small it is, and competitive players around, you will expect a meta game. Here’s a good post from @Kurokazna about meta game and perfect imbalance in a game.
Same as asking people to not use Whitehelm as their home kingdom, you can’t expect everyone to change their defense deck in PvP too. Some people don’t care about defense wins, some people does. For those who care, they will always try to find a defense team that can get them as much defense win as possible, and as easy as possible to be played by AI. And for now, Bone Dragon deck (with any variations of it), is the easiest way to get some defense victory. Or they will put some annoying troops that can make some people rage quit (spirit fox, wraith, famine, etc). However, even though Bone Dragon get nerfed in the future, people will then find another meta and so on. And when some people find that new meta, others usually jump into that ship too and copy that team, make this kind of redundant stuff seems inevitable.
For now, what can we do as a player to get rid of boredom of facing the same team over and over again is to put a single troop defense. From my experience, while it gives you lesser PvP points, but it usually gives you a wider variations of team you fighting in PvP. Another way to get rid of boredom is to challenge myself to fight in PvP with some team variation, not just using the current powerhouses like EK, BD, or Gard. I hope that helps.
Just my 2 rupiah.