Using words no longer in common usage, or arguably even words in English at all (using alternate spellings etc.), doesn't make the game difficult. It makes it tedious.
Don't like the game? Then don't play - it's pretty simple. I find Dordle gets pretty close to including some words that border on unfair, but they all link to wiktionary with a definition, so your comment that they aren't English is just false. I like the challenge of Dordle and learn more words that are new to me than any other word game I play. You're really going to have a tantrum after you play the Aug 19 words LOL.