That is true, as do most browsers nowadays, including Firefox, now that I’ve ditched Chromium.

But we are discussing DeepL, and in that regard, my issue with the URL is that I am using the built-in browser search engine section, where you can setup your own url and write in a keyword. Then every time you type that keyword in the address bar, any term following it will be searched on the site, through the URL that you have provided.
There’s more detail on that in this previous comment of mine, in reply to an earlier user who responded to my original comment.