You are totally right, thank you for the pertinent comment and I will correct that. This is one of the first cli's I had not thought of at all.
rm -- --file-that-looks-like-a-flag rm ./--file-that-looks-like-a-flag
;)(I'm always half-tempted to suggest that a "strict mode" shell should require all paths in arguments to start with either / or ./ so that anything else is unambiguously not a file.)
(I spent a bunch of time with a file named -i in my home directory, you know, just in case.)