I'm a bass (pick) player, and sometime teacher. I've been through this argument time and again, but mostly when in the presence of other bass players who really look down their noses at pick players.
I remember being at Brighton Rockschool and Rob Burn of London's BassTech giving us a quick lesson. As the only pick player in our group, When I played to him he sighed, said 'well if you must use a pick...' and then showed me some rock solid pick technique
My jazz teacher Paula Gardiner tried to get me to switch, but I'm sufficiently comfortable in my own technique to fight my corner and I refuse to join the masses of finger players.
Many of them try to tell me how much faster and more fluid a finger player is, my response is to disuss Dominque di Piaza (spelling?) who is John McLaughlin's bass in the J McL Trio. He uses first finger and thumb in an up/down motion, strangely much like a pick. He's also by far the fastest bass player I've ever heard, using a completely unique style...
I learned pick playing firstly from Trevor Rabin (Yes guitarist during the 80s) who has perfect technique, and then from Frank Gambale (guitarist with Vital Information and Chick Corea) who taught me all kind of sweep techniques not normally associated with the bass!
(In both cases I'm talking videos... I can't afford those
kinds of lessons)
I don't think Squire has a good picking technique, in fact I don't know a bass player who's picking technique I would actively recommend.
My hero of bass technique is Dave LaRue (Steve Morse Band). Solid with a capital Sol.
My villain is John Myung (Dream Theater). Don't hunch like he does! You'll hurt yourself!