There is no "the" data stack.

Some organizations have complicated orchestration requirements, some don't. Some organizations have large amounts of heterogeneous data, some don't. Some organizations need to run large distributed machine learning tasks, some don't.

If you adopt tools that don't actually solve real problems that your team/org faces, then of course you'll end up with a bunch of extraneous fluff.

Your comment has the same flavor as the frequent HN meme of "I just use Vi and Tmux and a BSD server for my business and anything else is a sign of organizational failure and individual weakness".

All of these tools exist for a reason. Where you get into trouble is losing focus on solving your real practical problems.