Rubin is talking about McCartney being a unique songwriting talent and a great singer. It's a bit of a stretch to include the title, best bass player!
IMO the number one, the most significant bass player of all time, is the guy who changed the way that bass lines were created and changed bass playing for everyone.
The guy who didn't just open the door for the rest of us, but knocked it clean off it's hinges. The guy whose bass lines were unique and ranged from the simplest, Higher and Higher and My Girl to the most complicated, For Once In My Life and Darling Dear . . . James Jamerson.
My guess is that even bass players will only have a passing interest in your rig.
Your bass gear is for making you happy. That will make you play better, which will make the band happy. That will make the band play better which will make the audience happy. Which is the purpose of the gig.
If you are tearing up your fingers and getting blisters when playing bass, you're doing it wrong and wasting a lot of energy in the process.
Don't hit, pull or dig in. You need a firm touch but need to play with some finesse and you won't have any problems.
Many years ago I managed to cut the knuckle of my left hand index finger to the bone. I was DIYing and the Stanley knife slipped! This was one a Saturday afternoon. I dropped into A&E on the way to the gig, but they had a 2 hour wait, so I gaffer taped my finger straight and did the gig with the three remaining fingers, middle, ring and pinky. I had to rearrange the bass lines on the fly, but got through it.
There is some great music being made these days, Marcus Miller, Keb Mo, Cory Wong, Vulfpeck, Vintage Trouble, Scary Pockets, Gary Clarke Jr, Jon Cleary. . . . . etc etc
I bought a Mike Lull Jazz bass that was the best bass I'd played. A few weeks later I bought a Sadowsky Jazz and sold the Lull. One in one out. Now the Sadowsky is too heavy for me to gig and the Lull would have been perfect at just over 8lbs. Ho Hum!
I saw Reggie McBride with Keb Mo at the Jazz Cafe and he seems to play with a very light feel.
It's all in the technique. Probably a low action and stroking the strings.
There are benevolent dictatorships, Stalinist dictatorships and guys who just want to make their vision happen. I've been in all 3 (and a few more). Obviously don't touch band leaders who are crooks and psycho's with a barge pole, but there is no reason why, if you get the trade off's between the pros and cons right, some of the "difficult" people can't be the most rewarding to work with.
The only reason I play a musical instrument is to be in a band and to gig.
I get the same buzz from gigging today as I did on my first gig, back on 20th November 1966.
I've done big and heavy. In the 70's I briefly gigged an Ampeg 215, which must have been around 130lbs, but lugging that around on my own nearly killed me. I sold it after a week. I have no idea what I was thinking with that one.
I'm lucky, I have no D class/Neo hang ups, and am hearing some great sounds out there with players using similar rigs.
IMO it doesn't matter how many gigs I do in a week, or the size, I take 2 amps, 2 cabs, 2 basses and a bag full of accessories.
With my lightweight gear load in, set up and load out takes minutes.
Most of the players I know are in multiple bands. Many are making a living at being a musician so diary clashes will occur. How you manage the diary and deps is more important than having or not having a dep.
Picking a number out of the air is pointless.
We had a "name" drummer in one band and he was off touring for months on end. I loved it. The deps were excellent and much nicer people to be around than the regular guy.
My Newcastle stories. . . .
It's the only place in the UK where, after asking directions, we had to drive around the corner and ask again. None of us understood a word!
After a gig we were looking for the road out of town. It was late and we stopped at a bus stop to ask a guy the way. He opened the passenger door, pushed in and started giving us directions. We drove the cheeky sod to his front door!! Then he told us how to get to the motorway.