This entirely. There is a BIG difference between busy and overly-busy. If the song can carry busy playing, then go for it. If by being busy you're going to bust the groove or tread on others' toes, then back off.
I saw a jazz combo down at the Old Duck** in Bristol one night, the bassist had a nice old Jazz and my first impression was that he could really play, but it became apparent that he just didn't know when to stop. He took a solo, which was very impressive, but he just kept doing it. He widdled away all over the sax solo, he even kept on in the drum solo when all I wanted was for him to STFU. After a couple of songs my opinion of him had totally changed, and I just wanted him to stick his nice old Jazz where the sun didn't shine.
** as all you Brizzlers will know, its actual name is the Old Duke... but I had a Brazilian friend some years ago who called it 'Duck' and it's kind of stuck.
I agree.
For my money one of the greatest recorded basslines of all time. See my previous comment: "if the song can carry busy playing, then go for it".