Version: 0.2.11, installed from AUR repo (binary-release)
Before testing, I removed everything from .config/fresh and .local/share/fresh.

When I open any plain text file, I am greeted with the error:
WARN fresh::app::file_operations: Failed to spawn LSP client for language: text

There seem to be no 'text' language or LSP for it defined. So why does the editor even try to start it?

IMHO, plain text has no need for LSP :-)