Bismuth for Plasma 5

Nah. I couldn't get behind Bismuth either. You had rigid ways you could arrange your windows with no way to adjust.

For instance, you can't get a layout like this with Bismuth (or any dynamic tilers that I know of, i.e. dynamic tilers aren't worth using):

---------------------------------------
| A                    | B            |
|                      |--------------|
|----------------------| C            |
| E        | F         |--------------|
|          |           | J    |   K   |
---------------------------------------

The closest in Bismuth would be using master and slave like:

---------------------------------------
| A                    | B            |
|                      |--------------|
|                      | C            |
|----------------------|--------------|
| E                    | J            |
|----------------------|--------------|
| F                    | K            |
---------------------------------------

Which isn't nearly as useful

I gave Plasma a genuine, honest try, both 5 and 6, and it was a complete let down.

But your attitude would make Pop Shell devs burn their own project down out of fear

Nah bc the Pop Shell devs have done an AMAZING job. The new COSMIC will make KDE and GNOME look like pet projects when it drops.