Sad days. Haven't played in forever but the jar client was hella universal and let you play on anything. And Javas on arm, your pi, etc. Was such a low effort game 90% of the time and was made to be "playable" at like 10 fps on a web browser 30 years ago. So it was always a fun benchmark, similar putting doom on a calculator.
Going to be a lot harder for private servers and communities that where making HD clients. Makes me want to find a vanilla private server I can preserve or play around with locally.