I think that KDE's track record shows that devs do not remove stuff just because. Quite the contrary.

But sometimes stuff does get removed and often it is because or it is unmaintained (and been so for a while), or because it is built on some old technology that cannot be replicated in the new environment without a complete rewrite.

In both cases, the reason a feature is discontinued boils down to a lack of resources.

Fortunately, the solution is simple: do your part.

KDE is a porous, grassroots and welcoming community. Join us and become part of the effort to build one of the largest and most diverse collections of end user, publicly-owned, free software projects in existence.

I know, I know: "but I can't code", etc., etc. But there are many things you can do to help. You can help organise Akademy 2024, you can translate menus and system messages, you can write documentation, draw wallpapers, design icons, edit videos, support booth staff at events, triage and report bugs, or just donate and contribute to financially supporting devs who still have to hold down pesky day jobs that get in the way of coding for KDE... The list goes on and on.

The point is, regardless of your level of technical knowledge, the more resources you free up elsewhere, the more time the people who do know how to code will have to maintain and translate software and features in the new Plasma 6 environment.