I'd keep the watermark if it said
Activate Plasma
Go to dotfiles to activate Plasma
KDE is an international technology team creating user-friendly free and open source software for desktop and portable computing. KDE’s software runs on GNU/Linux, BSD and other operating systems, including Windows.
If you encounter a bug, proceed to https://bugs.kde.org, check whether it has been reported.
If it hasn't, report it yourself.
PLEASE THINK CAREFULLY BEFORE POSTING HERE.
Developers do not look for reports on social media, so they will not see it and all it does is clutter up the feed.
I'd keep the watermark if it said
Activate Plasma
Go to dotfiles to activate Plasma
More than Plasma 6, this is a feature of in development plasma desktop