Some applications do not start for a very long time

No one is criticizing you. You mentioned you use WezTerm and Nautilus which are not normal applications used with KDE. Therefore, those attempting to help you were curious why you were using them.

FYI, KDE and GNOME have their own set of applications built with their own toolkit. As you may already be aware, GNOME uses Gtk while KDE uses Qt. Usually users do not like pulling in all the extra dependencies just for one application.

Either way, you have not provided enough information for anyone to help you. No one can reproduce your issue.

Please see: