All of them are still true, except for the last one (for nearly all use cases).
Then Java developers heard this, confused it for "Java executes slowly" and so they never fixed it, until Java applets just became obsolete.
"Amazing new IDE has just come out! Good luck running it!"
Also local Swing apps were memory hogs compared for the time. 20MB was a lot on a machine that had 256 or 512MB in total.